Design and simulation of a UAV with portable folding wings for search and rescue / 军事医学

Objective To design a search and rescue UAV that is portable and user-friendly in order to meet the needs of rescue personnel on the battlefield.Methods Three-dimensional design software CATIA was used to complete the structural design of the UAV body.In order to make full use of the internal space of the UAV body,folding wings were adopted to reduce the volume of the UAV.By using ABAQUS,the finite elements of the key parts of the UAV were analyzed before the modal analysis of the whole vehicle was conducted to verify the reliability of the structure.The robot simulation software Webots was used for motion simulation of the UAV.Results Simulation analysis and test verification suggested that the structural design of the UAV was well-grounded.It could be quickly and properly deployed by means of hand launch or barrels,which made it easier for rescuers to use the UAV.Conclusion The design and simulation research of UAVs with portable folding wings for search and rescue is of great significance for the research and development of physical prototypes.This study is expected to stimulate new ideas for the development of rescue equipment in the PLA,and contribute to miniaturization of UAVs.

Effect of different stretching lengths of lingual movable wing on the adduction of mandibular anterior teeth:a biomechanical study / 中国组织工程研究

BACKGROUND:Lingual movable wing is a new type of lingual orthodontic technique and the different stretching lengths of the wring affect the torque control effect of anterior teeth.However,there is yet no related biomechanical research. OBJECTIVE:To investigate the displacement trend of dentition during adduction of mandibular anterior teeth and the effect of different wing stretching lengths on the biomechanical effect of mandibular anterior teeth. METHODS:The data of the mandible and lower dentition were collected by cone-beam CT and reconstructed using Mimics software to establish a three-dimensional finite element model of mandibular anterior teeth adducted by the lingual movable wing.The ANSYS software was used to analyze the initial displacement of the mandibular anterior teeth under the following conditions:A,2 mm stretching length;B,2.5 mm stretching length;C,3 mm stretching length;and D,3.5 mm stretching length. RESULTS AND CONCLUSION:The trend of initial displacement of lower dentition:The central incisors moved lingually with depression,the lateral incisors and canines moved mildly lingually with mesial lingual torsion,the second premolar was tilted distally with a marked lingual inclination and the first molar showed an overall mesial inclination with mesial crown eversion.Therefore,in the adduction cases of mandibular tooth extraction,attention should be paid to the lingual movement of the second premolar,which could be offset by corresponding techniques in clinic.The trend of anterior tooth displacement in all directions:from condition A to condition D,in the sagittal direction,the difference value in crown-root displacement of central incisors changed from-11.891 μm to-5.757 4 μm,indicating that the central incisor changes from oblique movement to overall movement.The difference value in crown-root displacement of lateral incisors changed from-11.828 1 μm to-6.711 45 μm,and that of canines changed from-7.572 3 μm to-4.695 5 μm,indicating that the oblique movement of the lateral incisors and canines is also changing to an overall movement.In the vertical direction,from condition A to condition D,the reduction of incisors was gradually increased,while that of canines was gradually decreased.These findings indicate that the stretching length of the wing can affect the oblique movement trend of the anterior teeth.As the wing continues to stretch,the torque control of the lower anterior teeth will become better.

Discrimination of cryptic species: Tabanus triangulum and Tabanus occidentalis (Diptera: Tabanidae) differ in size and shape / Distinção de espécies crípticas: Tabanus triangulum e Tabanus occidentalis (Diptera: Tabanidae) diferem em tamanho e forma

Abstract Horse fly females (Diptera, Tabanidae) are hematophagous and can vector pathogens that affect livestock. Complexes of cryptic species are common in Tabanidae, as exemplified by some species of Tabanus, including Tabanus triangulum and Tabanus occidentalis, both prevalent in the Southern region of Brazil. In this study, geometric morphometrics were employed to ascertain the wing venation in species identification. It was demonstrated that this tool effectively differentiates T. triangulum from T. occidentalis in the coastal plain of Rio Grande do Sul state, situated within the Pampa biome. The results indicate that T. triangulum and T. occidentalis occupy distinct regions of the morphological space, allowing their precise identification through geometric morphometrics, which is fast, affordable, and easy to implement.

Resumo Fêmeas de mutucas (Diptera, Tabanidae) são hematófagas e podem ser vetores de patógenos que afetam animais de criação. Complexos de espécies crípticas são comuns em Tabanidae, como exemplificado por algumas espécies de Tabanus, incluindo Tabanus triangulum e Tabanus occidentalis, ambas prevalentes na região Sul do Brasil. Neste estudo foi utilizada morfometria geométrica para avaliar a venação das asas na identificação de espécies. Foi demonstrada que essa ferramenta diferencia, efetivamente, T. triangulum de T. occidentalis na Planície Costeira do Rio Grande do Sul, situada no bioma Pampa. Os resultados indicam que T. triangulum e T. occidentalis ocupam regiões distintas do espaço morfológico, permitindo sua identificação precisa por meio da morfometria geométrica, a qual é rápida, acessível e fácil de implementar.

Identification of medically and forensically relevant flies using a decision treelearning method

@#Blow flies, flesh flies, and house flies can provide excellent evidence for forensic entomologists and are also essential to the fields of public health, medicine, and animal health. In all questions, the correct identification of fly species is an important initial step. The usual methods based on morphology or even molecular approaches can reach their limits here, especially when dealing with larger numbers of specimens. Since machine learning already plays a major role in many areas of daily life, such as education, business, industry, science, and medicine, applications for the classification of insects have been reported. Here, we applied the decision tree method with wing morphometric data to construct a model for discriminating flies of three families [Calliphoridae, Sarcophagidae, Muscidae] and seven species [Chrysomya megacephala (Fabricius), Chrysomya rufifacies (Macquart), Chrysomya (Ceylonomyia) nigripes Aubertin, Lucilia cuprina (Wiedemann), Hemipyrellia ligurriens (Wiedemann), Musca domestica Linneaus, and Parasarcophaga (Liosarcophaga) dux Thomson]. One hundred percent overall accuracy was obtained at a family level, followed by 83.33% at a species level. The results of this study suggest that non-experts might utilize this identification tool. However, more species and also samples per specimens should be studied to create a model that can be applied to the different fly species in Thailand.

Preliminary application of surgical microscope installed with a measuring system in blood vessel measurement in super-microsurgical model of chicken wing / 中华显微外科杂志

Objective:To explore the effect of preliminary application of a surgical microscope with a measuring system in measurement of the outer diameter of blood vessels in the super-microsurgical model of chicken wing.Methods:From November 2022 to January 2023, 12 chicken wing models were established by having the main blood vessels of chicken wings dissected and separated. Outer diameter of blood vessels were measured by the surgical microscope with an installed measuring system and a digital vernier calliper. Results of the 2 measuring methods and measuring time were compared. SPSS 26.0 was used for statistical analysis of the data. The comparison between the 2 measuring methods with continuity data consistent with the homogeneity of normal distribution variance was performed by paired t test, and expressed by Mean ± SD. The difference between the 2 measuring methods was statistically significant ( P<0.05). Results:Results measured by the microscope with a measuring system and a digital vernier calliper were 1.29 mm± 0.08 mm and 1.28 mm± 0.07 mm for chicken wing brachial artery, 1.11 mm± 0.11 mm and 1.09 mm ± 0.11 mm for radial artery, 0.98 mm± 0.09 mm and 0.99 mm± 0.12 mm for ulnar artery, 0.63 mm ± 0.06 mm and 0.64 mm± 0.07 mm for dorsal metacarpal artery, and 0.39 mm± 0.06 mm and 0.40 mm± 0.09 mm for palmar artery, respectively. No significant difference was found between the 2 measuring methods ( P>0.05). The time of measurement for the 2 measuring methods was 5.90 s± 1.12 s and 8.86 s± 1.74 s, respectively. The time for the microscope with a measuring system was less, with statistically significant difference ( P<0.05). Conclusion:It is accurate, convenient and intuitive to use a surgical microscope installed with a measuring system to measure the outer diameter of tinny vessels. It is worth to popularise and apply the surgical microscope equipped with a measuring system in super-microsurgery.

Validation of the subtle and blatant prejudice towards Bolivian immigrants scale in Argentina

Abstract Even though prejudice towards Bolivian immigrants is one of the main reasons for discrimination in Argentina, there is no valid measure to assess it. The aim of this study was to explore the psychometric properties of the subtle and blatant prejudice towards Bolivian immigrants scale. In addition, we tested correlations with right-wing authoritarianism, social dominance orientation, feelings towards Bolivian immigrants, and ideological self-placement. Data was collected through a convenience sample of 431 undergraduate students from Buenos Aires, with an age range from 18 to 45 years old (38.75% men and 61.25% women). Results showed adequate psychometric properties for the scale. Moreover, significant correlations between subtle and blatant prejudice and the other psychosocial variables tested were found. Implications of these findings are discussed.

Ideological Influences on Intergroup Attitudes in the Context of the Hague Court Boundary Dispute between Peru and Chile / Influencias ideológicas de las actitudes intergrupales en el contexto de la disputa fronteriza entre Perú y Chile ante la Corte de la Haya / Influências ideológicas das atitudes intergrupais no contexto da disputa fronteiriça entre Peru e Chile frente à Corte de Haia

Abstract In the context of the border dispute presented by Peru against Chile in the The Hague Court, this study analyzes the influences of two ideological motivational dimensions: Right-Wing Authoritarianism (RWA) and Social Dominance Orientation (SDO) on a set of intergroup attitudes that involve both nations. To this end, a survey study of 196 Chileans and 223 Peruvians participants was conducted. The instruments used to measure ideology and political attitudes are the following ones: RWA Scale; SDO Scale; Scale of Intergroup attitudes between Chile-Peru and specific questions on interest in the Hague litigation and willingness to fight for one's country. The results show that in the Peruvian case attitudes of belligerence and alert and a greater willingness to fight for the country are better explained by the RWA, while in the Chilean case these same attitudes are explained both by the RWA as well as the SDO. On the other hand, pacificist attitudes are explained inversely by SDO in both countries. These findings support the hypothesis that intergroup dynamics between both countries have been marked by expressed actions of a Chilean expansionism versus a Peruvian vengefulness and suggest that equalitarianism will promote attitudes toward respect and cooperation between both groups, changing the frames of expansionism and vengefulness for one of a culture of peace.

Resumo Este estudo analisa as influências de duas dimensões motivacionais ideológicas: o Autoritarismo de Direita (RWA) e a Orientação à Dominação Social (SDO) em um conjunto de atitudes intergrupais que envolvem Perú e Chile, no contexto da disputa fronteiriça apresentada pelo primeiro contra o segundo na Corte de Haia. Para isso, foi desenvolvido um estudo com 196 participantes do Chile e 223 do Peru. Os instrumentos utilizados para medir a ideologia e as atitudes políticas são os seguintes: Questionário de RWA; questionário de SDO; questionário de atitudes intergrupos entre Chile é Peru e itens de interesse na disputa ante A Haia e a vontade de lutar pelo próprio país. Os resultados mostram que, no caso peruano, as atitudes de beligerância e alerta, e uma maior disposição de lutar pelo país são explicadas pelo RWA, enquanto no caso chileno, essas mesmas atitudes são explicadas tanto pelo RWA quanto pela SDO. Por outro lado, as atitudes pacifistas são diminuidas pela SDO nos dois países. Estos resultados corroboram á hipótese da dinâmica intergrupal entre os dois países, marcada por ações explícitas do expansionismo chileno versus revanchismo peruano; os resultados também sugerem que as ideologias igualitarias poderão promover atitudes de respeito e cooperação entre os dois grupos, alterando os esquemas expansionista e revanchista para uma cultura de paz.

Resumen En el contexto de la disputa fronteriza presentada por Perú contra Chile ante la Corte de la Haya, este estudio analiza las influencias dos dimensiones motivacionales ideológicas: el Autoritarismo de Derecha (RWA) y la Orientación a la Dominancia Social (SDO) en un conjunto de actitudes intergrupales que involucran a ambas naciones. Con esta finalidad, fue desarrollado un estudio por encuestas con 196 participantes de Chile y 223 de Perú. Los instrumentos utilizados para medir la ideología y las actitudes políticas son los siguientes: Escala de RWA; Escala de SDO; Escala de actitudes intergrupales entre Chile-Perú y preguntas específicas sobre el interés en el litigio de La Haya y la disposición de luchar por el propio país. Los resultados muestran que en el caso peruano las actitudes de beligerancia y alerta, y una mayor disposición a luchar por el país son explicadas por el RWA, mientras en el caso chileno, estas mismas actitudes son explicadas tanto por el RWA como por la SDO. Por otra parte, las actitudes pacifistas son explicadas inversamente por la SDO en ambos países. Estos hallazgos corroboran la hipótesis sobre las dinámicas intergrupales entre ambos países, las cuales han estado marcadas por acciones explicitas de expansionismo chileno versus revanchismo peruano; asimismo, los resultados sugieren que el igualitarismo promovería actitudes hacia el respeto y cooperación entre ambos grupos, cambiando los esquemas expansionista y revanchista por uno de cultura de paz.

A Review on Pharmacological Properties of Christia vespertilionis

@#Commonly referred to as ‘daun rerama’, Christia vespertilionis has increased in popularity in traditional and modern medicine. This review aims to report the relevance of this plant in terms of its traditional uses, pharmacological actions, phytoconstituents, extractions methods, and identify the research gaps and future potentials. The review is conducted as per PRISMA guidelines; a database search was conducted in Web of Science, Science Direct, Scopus and Google Scholar from 1996 to 2021. Results show that to date, phytochemicals such as alkaloids, flavonoids, quinones, and others have been identified, corresponding to its range of pharmacological activities that include anti-cancer, anti-malaria, and antioxidant. There have also been claims of antidiabetic activity but not supported by enough scientific evidence. Study on molecular and gene expression was still lacking. There is a good future in the research of this plant with many potential aspects to be investigated.

A identidade da direita em narrativas de seus militantes numa universidade brasileira / The identity of the right-wing in narratives of its militants in a brazilian university / La identidad de la derecha en las narrativas de sus militantes en una universidad brasileña

Em junho de 2013, emergiram no espaço público brasileiro diferentes grupos de direita rebelados contra o Partido dos Trabalhadores, que governava o Brasil naquele momento liderando uma grande coalizão de centro-esquerda. Desde então, uma nova direita se posiciona no debate político nacional, militando nas universidades e em outros contextos institucionais e mobilizando uma retórica agressiva contra o discurso de esquerda. O objetivo deste estudo é identificar os diferentes atributos da identidade da direita formulados em narrativas de militantes de direita de uma universidade pública brasileira, as contradições no conteúdo dessa identidade e os recursos retórico-discursivos mobilizados em sua construção. Com o uso do método de análise de discurso, foram analisadas transcrições de entrevistas realizadas com nove militantes de direita, alunos de uma universidade pública nordestina. Esses militantes mencionam três grupos políticos como constituintes da direita (os conservadores, os liberais e os libertários), mas somente dois são usados como categorias de autoidentificação: os conservadores e os libertários. Atributos identitários como o apreço pela verdade, a defesa da liberdade, a desconfiança em relação às mudanças abruptas e a valorização da família e da religiosidade cristã foram afirmados como definidores da identidade da direita. Em vários momentos, no entanto, os militantes produziam enunciados que contradiziam alguns desses atributos, revelando o caráter ambíguo e contraditório do discurso da militância estudada.(AU)

In June 2013, different right-wing groups emerged in the Brazilian public space rebelling against the Partido dos Trabalhadores, which ruled Brazil at the time leading a large center-left coalition. Since then, a new right-wing has positioned itself in the national political debate, militating in universities and other institutional contexts, and mobilizing an aggressive rhetoric against the leftist discourse. This study aims to identify the different attributes of the right-wing identity formulated in the narratives of right-wing militants in a Brazilian public university, the contradictions in the content of that identity, and the rhetorical-discursive resources mobilized in its construction. We analyzed transcripts of interviews conducted with nine right-wing activists, students from a public university in the Northeast using the speech analysis method. These militants mention three political groups as constituents of the right-wing (conservatives, liberals, and libertarians), but only two are used as categories of self-identification: conservatives and libertarians. Identity attributes such as an appreciation for the truth, the defense of freedom, a distrust of abrupt changes, and the appreciation for the family and Christian religiosity were affirmed as defining the identity of the right-wing. At various times, however, the militants produced statements that contradicted some of these attributes, revealing the ambiguous and contradictory character of the studied militancy discourse.(AU)

En junio de 2013, diversos grupos de derecha rebelaban contra el Partido de los Trabajadores, que gobernaba Brasil en ese momento liderando una gran coalición de centro-izquierda. Desde entonces, una nueva derecha se ha posicionado en el debate político nacional, militante en universidades y otros contextos institucionales, y movilizando una retórica agresiva contra el discurso de izquierda. El objetivo de este estudio es identificar los diferentes atributos de la identidad de derecha formulados en las narrativas de activistas de derecha en una universidad pública brasileña, sus contradicciones y los recursos retórico-discursivos movilizados. Como método el análisis del discurso, se analizaron las transcripciones de entrevistas realizadas a nueve activistas de derecha, estudiantes de una universidad pública del Nordeste (Brasil). Estos militantes mencionaron tres grupos políticos como constituyentes de la derecha (los conservadores, los liberales y los libertarios), pero solo dos utilizan las categorías de autoidentificación: los conservadores y los libertarios. Los atributos identitarios como el aprecio a la verdad, la defensa de la libertad, la desconfianza ante los cambios bruscos y el aprecio a la familia y la religiosidad cristiana fueron considerados definitorios de la identidad de derecha. En varias ocasiones, los militantes contradijeron algunos de estos atributos, revelando el carácter ambiguo y contradictorio del discurso de la militancia estudiado.(AU)

A identidade da nova direita brasileira em narrativas de seus militantes / The identity of the Brazilian New Right in its militants' discourse / L'identité de la Nouvelle Droite brésilienne dans les discours de ses militants / La identidad de la nueva derecha brasileña en las narrativas de sus militantes

Resumo Em 2013, no Brasil, emergem na cena política diversos agrupamentos políticos identificados com a direita política e unidos contra a esquerda e a permanência do Partido dos Trabalhadores no governo brasileiro. Este estudo investiga esse fenômeno no contexto da região Nordeste do Brasil. Seu objetivo é compreender como a militância de direita, em uma cidade média nordestina, organiza discursivamente uma identidade para si e para os grupos que elegem como antagonistas. Com o uso do método de análise de discurso, o estudo investiga transcrições de entrevistas realizadas com nove membros dessa militância. As categorias conservador, libertário e liberal foram usadas como posições de autoidentificação por esses militantes. O modo como descrevem essas categorias revela a pluralidade da direita, evidenciando as complexas relações e as contradições presentes no seu interior.

Abstract In 2013, Brazil saw the emergence of several political groups identified with right-wing politics and united against the left and the Worker's Party consecutive administration. This paper investigates the characteristics of this phenomenon in northeastern Brazil to understand how right-wing militancy discursively organizes its identity and that of groups it chooses as antagonists. Based on discourse analysis, the study analyzes transcripts of interviews conducted with nine members of this militancy. Categories such as conservative, liberal and libertarian were used by the interviewees as self-identifying positions. How they describe these categories reveals the plurality of the political right, highlighting its complexity and contradictions.

Résumé En 2013, le Brésil a vu l'émergence de plusieurs groupes politiques identifiée à la politique de droite et unis contre la gauche et l'administration du Parti des Travailleurs. Cet article étudie ce phénomène dans le nord-est du Brésil pour comprendre comment le militantisme de droite organise discursivement son identité et celles des groupes qu'ils choisit comme antagonistes. Basée sur l'analyse du discours, l'étude analyse les transcriptions d'entretiens menés avec neuf membres de ce militantisme. Les catégories telles que conservateur, libertaire et libéral ont été utilisées comme des positions d'autoidentification. La façon dont ils décrivent ces catégories révèle la pluralité de la droite, soulignant sa complexité et ses contradictions.

Resumen En 2013, varios grupos políticos surgieron en la escena política de Brasil identificados con la derecha política y unidos contra la izquierda y la permanencia del Partido de los Trabajadores en el gobierno brasileño. Este estudio investiga este fenómeno en el contexto de la región Nordeste de Brasil con el objetivo de comprender cómo la militancia de derecha, en una ciudad del Nordeste de tamaño mediano, organiza discursivamente una identidad para sí misma y para los grupos que eligen como antagonistas. Utilizando el método de análisis del discurso, este estudio analiza las transcripciones de entrevistas realizadas con nueve miembros de esta militancia. Las categorías conservador, liberal y libertario fueron utilizadas por los militantes como categorías de autoidentificación. La forma en que los militantes describen estas categorías revela la pluralidad de la derecha, destacando las complejas relaciones y contradicciones presentes dentro de ella.

Fluctuating asymmetry and exposure to pyrethroid insecticides in Triatoma infestans populations in northeastern Argentina

Exposure to sublethal doses of insecticide may affect biological traits in triatomines. We investigated the effects of toxicological phenotype (pyrethroid resistance status) and exposure to sublethal doses of deltamethrin on two traits of Triatoma infestans Klug (Heteroptera: Reduviidae) using a phenotypic plasticity experimental design. First-instar nymphs from 14 and 10 full-sib families from pyrethroid-susceptible and pyrethroid-resistant populations, respectively, were used. For the susceptible population, we treated first instars topically with acetone (control) or deltamethrin (treatment) once. For the resistant population, instars were treated once, twice and three times as first, third or fifth-instar nymphs, respectively. We measured cuticle thickness, wing size and wing shape of 484 emerging adults, and tested for treatment effects using mixed ANOVA and MANOVA models. Toxicological phenotype, exposure to deltamethrin and full-sib family exerted significant effects on cuticle thickness, wing size and wing shape. Adult triatomines previously treated with deltamethrin developed significantly thicker cuticles than control triatomines only in the resistant population and significantly bigger wings in both populations. Mean cuticle thickness and wing size increased with increasing exposures to deltamethrin. Exposure to sublethal doses of deltamethrin generated morphological modifications that may affect insect survival and flight dispersal, and hence may have evolutionary and epidemiological consequences.

Iliac ecchymosis, a valuable sign for hollow viscus injuries in blunt pelvic trauma patients / 中华创伤杂志(英文版)

PURPOSE@#Pelvic fractures are characterized by high energy injuries and often accompanied with abdominal and pelvic organ injury. CT has been applied for several decades to evaluate blunt pelvic trauma patients. However, it has a certain rate of inaccurate diagnosis of abdominal hollow viscus injury (HVI), especially in the early stage after injury. The delayed diagnosis of HVI could result in a high morbidity and mortality. The bowel injury prediction score (BIPS) applied 3 clinical variables to determine whether an early surgical intervention for blunt HVI was necessary. We recently found another clinical variable (iliac ecchymosis, IE) which appeared at the early stage of injury, could be predicted for HVI. The main objective of this study was to explore the novel combination of IE and BIPS to enhance the early diagnosis rate of HVI, and thus reduce complications and mortalities.@*METHODS@#We conducted a retrospective analysis from January 2008 to December 2018 and recorded blunt pelvic trauma patients in our hospital. The inclusion criteria were patients who were verified with pelvic fractures using abdomen and pelvis CT scan in the emergency department before any surgical intervention. The exclusion criteria were abdominal CT insufficiency before operation, abdominal surgery before CT scan, and CT mesenteric injury grade being 5. The MBIPS was defined as BIPS plus IE, which was calculated according to 4 variables: white blood cell counts of 17.0 or greater, abdominal tenderness, CT scan grade for mesenteric injury of 4 or higher, and the location of IE. Each clinical variable counted 1 score, totally 4 scores. The location and severity of IE was also noted.@*RESULTS@#In total, 635 cases were hospitalized and 62 patients were enrolled in this study. Of these included patients, 77.4% (40 males and 8 females) were operated by exploratory laparotomy and 22.6% (8 males and 6 females) were treated conservatively. In the 48 patients underwent surgical intervention, 46 were confirmed with HVI (45 with IE and 1 without IE). In 46 patients confirmed without HVI, only 3 patients had IE and the rest had no IE. The sensitivity and specificity of IE in predicting HVI was calculated as 97.8% (45/46) and 81.3% (13/16), respectively. The median MBIPS score for surgery group was 2, while 0 for the conservative treatment group. The incidence of HVI in patients with MBIPS score ≥ 2 was significantly higher than that in patients with MBIPS score less than ≤ 2 (OR = 17.3, p < 0.001).@*CONCLUSION@#IE can be recognized as an indirect sign of HVI because of the high sensitivity and specificity, which is a valuable sign for HVI in blunt pelvic trauma patients. MBIPS can be used to predict HVI in blunt pelvic trauma patients. When the MBIPS score is ≥ 2, HVI is strongly suggested.

Discovery of cockroach specimens of the genus Squamoptera (Ectobiidae: Pseudophyllodromiinae) from Okinawa, Japan, showing wing polymorphism

@# Cockroach specimens of the genus, Squamoptera were collected from the Iriomote island of Okinawa prefecture, Japan. The morphological features of the specimens were characterized as having a white band on the dorsal surface of its thorax, its tegmen reduced into a tiny scale-like structure and the hindwing was absent. Ocelli was also absent and the small compound eyes not extending to apex of the head nor to the frontal face but extend further lower than the base of the antennae. When the specimens were reared in the laboratory, besides the short wing form, the long wing form began to appear in the rearing colony. In our reproductive biological study, we observed that hatching of the ootheca from the short wing female takes about 30 days, with an average of 6.6 nymphs being hatched from one ootheca. The male to female ratio of the offspring was 36:30. However, the frequency appearance of the offspring from the ootheca of the short wing female was 98.5% short wing and 1.5% long wing form. Our specimens occasionally show body polymorphism in the form of individuals having long wings instead of the usual short one. The long wing form does not show the white band on the dorsal surface of its thorax.

Ideology, sexism, and beliefs about sexual violence in Peruvian university students and future police officers

Abstract The main objective of the present study is to establish a comparison between ideology (RWA and SDO), ambivalent sexism and beliefs about sexual violence, in a sample of Peruvian trainee from a police officer school (n = 81) and university students (n = 196). In addition, as a specific objective, it seeks to explore the relationships between the mentioned variables. The results showed significant differences between the groups at the level of the RWA (Right Wing Authoritarianism) ideological variable and the Subordination of women dimension of the Beliefs about Sexual Violence variable. Likewise, the structural model shows that the variables RWA and SDO (Social Dominance Orientation) have an impact on the dimensions of beliefs about sexual violence: Attribution of blame to women, Subordination of women and Exaggeration of women, having as mediators Benevolent and Hostile Sexism. The results show that beliefs about sexual violence in the sample of this study link to sexism and these, in turn, to ideology; however, the routes in which these beliefs are configured vary between police trainee and university students. Higher levels of RWA are observed in police trainee, an ideological indicator that, in this sample, paradoxically tends to be inversely related to sexism and beliefs about sexual violence against women that blame and subordinate them. Regarding the path of social dominance, this also directly relates to both expressions of benevolent and hostile sexism, although with greater predominance with the second, appealing to sex as a structural element on which this ideological component is established.

Resumen El presente estudio tiene como objetivo principal establecer una comparación entre la ideología (RWA y SDO), el sexismo ambivalente y las creencias sobre la violencia sexual, en una muestra de cadetes de una escuela de oficiales (n=81) y estudiantes universitarios (n=196). Además, como objetivo específico, busca explorar las relaciones entre dichas variables. Los resultados demostraron diferencias significativas entre los grupos a nivel de la variable ideológica RWA (Right Wing. Authoritarianism) y la dimensión Subordinación de la mujer de la variable Creencias sobre la Violencia Sexual. Asimismo, el modelo estructural evidencia que las variables RWA y SDO (Social Dominance Orientation) afectan las dimensiones de creencias sobre la violencia sexual: Atribución de la culpa a la mujer, Subordinación de la mujer y Exageración de la mujer teniendo como mediadores al Sexismo Benevolente y Hostil. Los resultados muestran que las creencias sobre violencia sexual en la muestra están vinculadas al sexismo y estas, a la ideología también; sin embargo, los recorridos en que estas creencias se configuran varían entre estudiantes de policía y estudiantes universitarios. En estudiantes de policía se observan niveles más altos de RWA, indicador ideológico que, en esta muestra, paradójicamente tiende a estar inversamente relacionado con el sexismo y creencias sobre la violencia sexual contra las mujeres que las culpan y subordinan. En cuanto al camino del SDO, también está directamente relacionado con expresiones de sexismo benevolente y hostil, aunque con mayor predominio con el segundo, apelando al sexo como elemento estructural sobre el que se establece este componente ideológico.

Phenotypic and genetic variation of Triatoma costalimai (Hemiptera: Reduviidae)

Abstract INTRODUCTION: We aimed to study intraspecific variation in Triatoma costalimai, a potential vector of Chagas disease present in Brazil and Bolivia. METHODS: We analyzed phenotypic (connexivum color patterns, wing morphometrics) and genetic variation (16S mtDNA) of three Brazilian T. costalimai populations. We compared 16S sequences with those of putative Bolivian T. costalimai and its sister species, T. jatai. RESULTS: Brazilian populations had different connexivum color patterns and forewing shapes. A 16S mtDNA haplotype network showed a clear separation of Brazilian T. costalimai from both T. jatai and Bolivian T. costalimai. CONCLUSIONS: We report considerable variability in T. costalimai populations.

Flight tone characterisation of the South American malaria vector Anopheles darlingi (Diptera: Culicidae)

BACKGROUND Flight tones play important roles in mosquito reproduction. Several mosquito species utilise flight tones for mate localisation and attraction. Typically, the female wingbeat frequency (WBF) is lower than males, and stereotypic acoustic behaviors are instrumental for successful copulation. Mosquito WBFs are usually an important species characteristic, with female flight tones used as male attractants in surveillance traps for species identification. Anopheles darlingi is an important Latin American malaria vector, but we know little about its mating behaviors. OBJECTIVES We characterised An. darlingi WBFs and examined male acoustic responses to immobilised females. METHODS Tethered and free flying male and female An. darlingi were recorded individually to determine their WBF distributions. Male-female acoustic interactions were analysed using tethered females and free flying males. FINDINGS Contrary to most mosquito species, An. darlingi females are smaller than males. However, the male's WBF is ~1.5 times higher than the females, a common ratio in species with larger females. When in proximity to a female, males displayed rapid frequency modulations that decreased upon genitalia engagement. Tethered females also modulated their frequency upon male approach, being distinct if the interaction ended in copulation or only contact. MAIN CONCLUSIONS This is the first report of An. darlingi flight acoustics, showing that its precopulatory acoustics are similar to other mosquitoes despite the uncommon male:female size ratio, suggesting that WBF ratios are common communication strategies rather than a physical constraint imposed by size.

Phenotypic plasticity, canalisation and developmental stability of Triatoma infestans wings: effects of a sublethal application of a pyrethroid insecticide

Abstract Background: Triatomine control campaigns have traditionally consisted of spraying the inside of houses with pyrethroid insecticides. However, exposure to sublethal insecticide doses after the initial application is a common occurrence and may have phenotypic consequences for survivors. Here, using Triatoma infestans (the main vector of Chagas disease in the Southern Cone of South America) as a model species, we quantifed the efects of exposure to a sublethal dose of pyrethroid insecticide on wing morphology. We tested if the treatment (i) induced a plastic efect (change in the character mean); (ii) altered environmental canalisation (higher individual variation within genotypes); (iii) altered genetic canalisation (higher variation among genotypes); and (iv) altered developmental stability (higher fuctuating asymmetry [FA]). Methods: Each of 25 full-sib families known to be susceptible to pyrethroid insecticides were split in two groups: one to be treated with a sublethal dose of deltamethrin (insecticide-treated group) and the other to be treated with pure acetone (control group). Wings of the emerging adults were used in a landmark-based geometric morphometry analysis to extract size and shape measurements. Average diferences among treatments were measured. Levels of variation among families, among individuals within families and among sides within individuals were computed and compared among treatments. Results: Wing size and shape were afected by a sublethal dose of deltamethrin. The treated insects had larger wings and a more variable wing size and shape than control insects. For both wing size and shape, genetic variation was higher in treated individuals. Individual variations and variations in FA were also greater in deltamethrin-treated insects than in control ones for all full-sib families; however, the patterns of shape variation associated with genetic variation, individual variation and FA were diferent. Conclusions: Insects exposed to a sublethal dose of deltamethrin presented larger, less symmetrical and less canalised wings. The insecticide treatment jointly impaired developmental stability and genetic and environmental canalisation. The divergent patterns of shape variation suggest that the related developmental bufering processes difered at least partially. The morphological modifcations induced by a single sublethal exposure to pyrethroids early in life may impinge on subsequent fight performance and consequently afect the dynamics of house invasion and reinfestation, and the efectiveness of triatomine control operations.

Quantum of cortico-cancellous bone safe for harvest from anterior iliac wing of pediatric patients: a finite element analysis with clinical correlation

Background: Objective was to assess the maximum quantum of cortico- cancellous bone that can be harvested from the Anterior Iliac Wing (AIW) of paediatric population.Methods: All patients reporting to the unit for the correction of bilateral cleft alveolus were included. A Computed Tomogram (CT) of the hip was recorded and the volume of cancellous bone available for harvest was assessed. Finite element model of the hip was generated using D2P and Geomagic Free form software and the impact of bone harvest on stress distribution along the anterior iliac wing was assessed by substituting the muscle forces (hip abductors and sartorius group) and was clinically correlated to volume harvested and donor site morbidities.Results: 10 patients were enrolled, 5 patients were excluded. CT volumetric evaluation revealed an average 0.5 cc to 4.7 ccof cancellous bone and 6.7 cc to 11 cc of cortical bone was available for harvest. Harvest of 50% of available graft volume was safe with minimal stress distributed along the line joining the tuberosity to the area between Antero Superior and Inferior spines (4.2 MPa at rest and 18.5 MPa at stance). The stress levels increased with increase in volume of bone harvested. Intra operatively 1.9 cc to 6.2 cc of cortico cancellous graft was harvested, which was equivalent to 60% of the graft available with no long-term morbidities.Conclusions: The volume of bone graft harvest should be restricted (up to 6 cc) to avoid long term morbidities.

Rapid detection of deformed wing virus in honeybee using ultra-rapid qPCR and a DNA-chip

Three-dimensional computed tomography evaluation of L5 pedicle screw fixation shielding by iliac wing width and height / 中国组织工程研究

BACKGROUND: Previous scholars often graded the height of iliac spine according to X-ray films. The quality of X-ray images is greatly affected by the photographic equipment and position. Simultaneously, X-ray film transforms the three-dimensional relationship between the iliac wing and the L5 pedicle into a planar relationship. The overlap of bone structure makes it difficult to identify anatomic markers. Especially, the combination with osteoporosis, calcification of paravertebral artery, and stasis of intestinal contents in the elderly will further affect the observation of bone structure on X-ray films. OBJECTIVE: To observe the degree of the entry point in L5 pedicle screw fixation shielded by the width and height of the iliac wing using the three-dimensional computed tomography reconstruction technique. METHODS: According to the inclusion and exclusion criteria, 350 CT images of L1-S2 region were selected as the study object. All patients signed the informed consent. This study was approved by the Hospital Ethics Committee. The degree of the entry point in L5 pedicle screw fixation shielded by the width of the iliac wing in central axis layer of the horizontal axis was analyzed using the three-dimensional computed tomography reconstruction technique and divided into levels 0, I, II, and III. The degree of the entry point in L5 pedicle screw fixation shielded by the height of the iliac wing in central axis layer of the oblique sagittal plane was analyzed and also divided into levels 0, I, II, and III. Level 0 indicates that the entry point of L5 pedicle screw is not shielded by the iliac wing, and levels I, II, and III indicate increasing degrees of entry point of L5 pedicle screw shielding by the iliac wing. The difference in the effect of width and height of the iliac wing on the shielding degree of entry point in L5 pedicle screw was compared between males and females. RESULTS AND CONCLUSION: (1) In 80.0% of patients (280/350), the entry point of L5 pedicle screw was not shielded by the width of the iliac wing. In 20.0% (70/350) of patients, the entry point of L5 pedicle screw was shielded by the width of the iliac wing. In all, 27.3% (49/179) were male, including 27 with level I shielding, 14 with level II shielding, and 8 with level III shielding; 12.3% (21/171) were female, including 12 with level I shielding, 7 with level II shielding, and 2 with level III shielding. (2) In 80.6% (68/350) of patients, the entry point of L5 pedicle screw was not shielded by the height of the iliac wing. In 19.4% (68/350) of patients, the entry point of L5 pedicle screw was shielded by the height of the iliac wing. In all, 24.0% (43/179) of these patients were male, including 23 cases with level I shielding, 16 cases with level II shielding, and 4 with level III shielding; 14.6% (25/171) were female, including 13 with level I shielding, 8 with level II shielding, and 4 with level III shielding. (3) The degree of entry point of L5 pedicle screw shielding by the width of the iliac wing on the horizontal axis was not exactly the same as that of the height of the iliac wing on the sagittal axis of the L5 pedicle screw in the same patient. In this study, there were 70 patients with wide iliac wings and 68 patients with high iliac wings; the degrees of shielding by the width and height of the iliac wing were the same in 35 cases and different in 44 cases. (4) The degree of entry point of L5 pedicle screw shielding by the width and height of the iliac wing was greater in males than in females. (5) The results confirmed that the incidence of entry point of L5 pedicle screw shielding by the iliac wing width and height was 20.0% and 19.4%, respectively. The degree of entry point of L5 pedicle screw shielding by the width and height of the iliac wing was greater in males than females. The degree of entry point of L5 pedicle screw shielding by the iliac wing width along the horizontal axis was not completely consistent with that of L5 pedicle screw shielding on the oblique sagittal plane. It is of great significance to evaluate the relationship between iliac wing and L5 pedicle screw entry point by three-dimensional computed tomography reconstruction before operation for improving the safety of L5 pedicle screw placement and decision-making of operation.