treatment of mild to moderate periorbital aging in Asians with ultrapulsed fractional CO 2 laser / 中华医学美学美容杂志

Objective:To evaluate the clinical effect of ultrapulse fractional CO 2 laser in the treatment of mild to moderate orbital aging in Asians. Methods:From January 2018 to December 2018, 36 patients (72 eyes) with mild to moderate orbital aging were enrolled, 22 women and 14 men, with an average age of 32.4 years. Each patient was randomly divided into two groups. In the traditional operation group, 36 eyes received blepharoplasty through traditional inferior conjunctival approach. In the ultrapulsed fractional CO 2 laser group, 36 eyesunderwent blepharoplasty through the lower eyelid conjunctival approach assisted by optoelectronics. Both groups were treated with ultrapulsed fractional CO 2 laser for periorbital aging. The operation time, detumescence time and postoperative complications were compared. At the same time, the periorbital skin relaxation was treated by the combination of the two groups. The patients were followed up for 12 months. Results:In the traditional operation group, 11 cases were evaluated as Barton grade Ⅰ preoperatively, and the efficacy score was 0.64±0.21. In 25 cases of Barton grade Ⅱ the efficacy score was 1.34±0.34. 17 cases were Barton Ⅰ in photoelectric assisted group, and the efficacy score was 0.92±0.18. In 19 cases of Barton grade Ⅱ, the efficacy score was 1.71±0.42. There was a statistically significant difference between the two groups in Barton Ⅰ efficacy score, P<0.05 ( P=0.016); There was also a statistically significant difference between the two groups in efficacy score of Barton Ⅱ, P<0.05 ( P=0.039). The operation time of the photoelectric assisted group was (12.00±1.82) minutes, and the edema duration was (4.0±1.8) days. The duration of operation in the conventional surgery group was (16.00±3.75) minutes, and the duration of edema was (7.0±2.4) days. The operation time and edema duration in the photoelectric assisted group were both shorter than those in the traditional operation group, and the differences were statistically significant ( P<0.05). Conclusions:The blepharoplasty through traditional inferior conjunctival approach assisted with ultrapulsed fractional CO 2 laser has no obvious bleeding, with shorter operation time, swelling reduction time and the number of complications than the traditional operation.This method can solve the symptoms of blepharoplasty, lower eyelid skin relaxation and wrinkles around eyes. This method is worthy of promotion in the treatment of patients with mild to moderate periorbital aging.

Design and Implementation of Ultra-micro Nucleic Acid Protein Analyzer / 中国医疗器械杂志

In this paper, a nucleic acid protein analyzer based on Lambert-Beer law and ultraviolet spectrophotometry is introduced, which is composed of ultraviolet monochromatic light generator, photoelectric signal detection module, vortex mixer, touch screen and embedded central controller. For ultra-micro measurement, a continuous-wavelength full-spectrum spectrophotometric detection circuit is designed in the hardware part. The transmitted light signal is collected by silicon photodiode, amplified and processed by subsequent circuit, and then transmitted to a single chip computer STM32F407VGT6 with CortexTM-M4 core after A/D conversion. The concentration and purity of nucleic acid protein are evaluated by assistant software detection algorithm. The instrument has the characteristics of compact size, flexible use, simple operation, high sensitivity and high detection efficiency. The experimental results show that the instrument has good sensitivity, repeatability and accuracy, and is suitable for the ultra-micro measurement of nucleic acid sample concentration, purity and protein concentration.

A Photoelecteochemical Sensor Based on CdS Sensitized Fe:TiO2Nanosheets for Determination of Cu2+ / 分析化学

Iron-doped titanium dioxide nanosheets was prepared by hydrothermal method using tetrabutyl titanate (C16H36O4Ti) and iron trifluoride (FeF3) and modified on ITO electrode.ITO/Fe : TiO2/CdS photoelectrochemical sensor was fabricated by successive ionic layer absorption and reaction(SILAR) method for determination of copper ion.The band gap of electode material was narrowed by iron doped TiO2 nanosheets,which made its absorption red-shifted and its response range of light was magnified.Based on the sensitization effect of CdS,the absorption and utilization of visible light of sensor was significantly enhanced and the photoelectric signal was amplified via reducing the recombination of electrons and holes.The sensor displayed excellent analytical performance for detection of copper ion with linear range of 0.2-4.0 μmol/L and 4.0-80.0 μmol/L and with the detection limit of 85 nmol/L.The sensor was used to detect copper ion in tap water,drinking water and Yongjiang river water with recoveries ranging from 94% to 111%.

Photoelectron-Regulated Redox Reaction of Polyaniline for Visual Detection of Trace Copper / 分析化学

A photochromic sensing platform composing of emeraldine salt of polyaniline ( ES-PANI ) and titanium dioxide nanoparticles ( TiO2 NPs) for visual detection of trace copper was developed. Under ultraviolet light irradiation, the greenish ES-PANI could be oxidized to dark blue pernigraniline salt by the photogenerated hole of excited TiO2 NPs. In the presence of Cu2+, a light yellow leucoemeraldine salt was visually observed. The overall mechanism of color change was verified to be corresponding to the different redox states of PANI regulated by Cu species during the photochromic process. By integrating the advantages of both photoelectric property and visual detection, the redox reaction-based sensing mechanism led to a good sensitivity and high selectivity in the detection of Cu2+ with the detection limit of 0. 4 μmol/L. Besides the naked eye, two color recognition methods including reading mean green intensities in Photoshop and recording ultraviolet absorbance in microplate reader were also studied. This method was successfully applied to Cu2+ detection in human hair with satisfactory recoveries. More significantly, this sensing platform was really simple, low-cost and able to detect an array of analytes within several minutes without requiring sophisticated equipment. This photoelectron-regulated colorimetric strategy provided a novel concept for the design of visual sensing platform, and could develop the portable test kits for rapid detection in clinical diagnosis.

Non-invasive treatment to grade 1 essential hypertension by percutaneous laser and electric pulse to acupoint with music: A randomized controlled trial / 中国结合医学杂志

<p><b>OBJECTIVE</b>To study a non-drug therapy for hypertension disease by combining percutaneous laser and electric pulse stimulation to acupoint with music, and to test the efficiency of the combining treatment to grade 1 essential hypertension.</p><p><b>METHODS</b>A total of 174 patients with grade 1 essential hypertension were randomly assigned to 3 groups with a random number table after Chinese medicine (CM) syndrome differentiation: the photoelectric and musical treatment group (Group 1, with a self-developed multi-mode audio frequency pulse photoelectric therapeutic apparatus), acupuncture group (Group 2), and oral placebo group (Group 3), 58 cases per group. The curative effect of each group was evaluated by the changes of blood pressure and CM syndrome integral before and after treatment.</p><p><b>RESULTS</b>Compared with Group 3, there were significant decrease of blood pressure and CM syndrome integral in Group 1 and Group 2 (P<0.01). Compared with Group 2, Group 1 showed the highest decrease in systolic pressure (P<0.017). The total effective rate of anti-hypertension in Group 1 (91.38%, 53/58) was significantly higher than that in Group 2 (74.13%, 43/58) and Group 3 (18.97%, 11/58, P<0.05 or P<0.01); and that in Group 2 was also significantly higher than that in Group 3 (P<0.01). There were significant difference in the total effective rate of CM syndrome integral in both Group 1 (93.10%, 54/58) and Group 2 (84.48%, 49/58) as compared with Group 3 (17.24%, 10/58, P<0.01), while there was no significant difference between Group 1 and Group 2 (P>0.05).</p><p><b>CONCLUSIONS</b>The multi-mode audio frequency pulse photoelectric therapeutic apparatus, combining music, laser and electric pulse stimulation, is clinically useful for grade 1 essential hypertension. This "three in one" therapy method is non-invasive, easy and simple to handle. It is expected to be popularized as a new alternative treatment.</p>

Measurement of the photoeffect cross section and the K-absorption edge energy of Dy, Ta, Pt and Au atoms using Bremsstrahlung / Medición de la sección eficaz de fotoefecto y de la energía del borde de absorción K de los átomos Dy, Ta, Pt y Au utilizando radiación de frenado

An experimental setup to determine the K-shell photoelectric cross-section of Dy, Ta, Pt and Au atoms was implemented at the Nuclear Analytical Laboratory (LAN) of the InSTEC. Bremsstrahlung photons, produced by - beta particles hitting a thin Ni converter, were used to irradiate the target under study. A HPGe detector, coupled to standard nuclear instrumentation, collected the incident and transmitted spectra. A sharp decrease in intensity at the K-shell binding energy was observed in the transmitted spectra. The photon beam divergence effects were corrected with a calibration curve calculated with Monte Carlo simulations (MCNPX 2.6). In order to establish accurately the cross section at the K-edge energy, the obtained data was processed by two methods: fitting the total cross section to a sigmoidal function, as well as the cross section branches around the K-edge to the empirical law . The Empirical Law method was introduced in this work to minimize the detector resolution effects. The results were compared with experimental and theoretical values showing the best agreement when the thinner targets were used. For the first time the photoeffect cross section at the K-edge energy for Pt is reported at first time.

Se determina la sección eficaz fotoeléctrica de la capa K de los átomos Dy, Ta, Pt y Au en un arreglo experimental desarrollado en el Laboratorio Analítico Nuclear del InSTEC. Los blancos bajo estudio se irradiaron con fotones de frenado producidos en un radiador de Ni por las partículas beta emitidas por una fuente de -. Los espectros incidentes y de transmisión se colectaron en un detector de germanio hiperpuro, acoplado a su instrumentación nuclear estándar. En los espectros de transmisión se observó un decrecimiento agudo de la intensidad correspondiente a la energía del borde K. Los efectos de interacciones múltiples del haz fotónico en las láminas blanco se corrigieron a través de una curva de calibración calculada mediante simulaciones Monte Carlo (MCNPX 2.6). Con vistas a garantizar la mejor precisión en la determinación de la sección eficaz para la energía del borde K, los datos obtenidos se ajustaron según dos comportamientos funcionales en esta región: una sigmoide y una ley empírica del tipo . Este último método se introdujo en el trabajo y permite minimizar los efectos resolutivos. Los resultados obtenidos se compararon con valores teóricos y experimentales, mostrando mayor concordancia cuando se emplean blancos finos. Se reporta, por primera vez, la sección eficaz de fotoefecto en el borde K del platino (Pt).

Study on Characteristic of Photoelectric Facial Blood Flow Volume and Its Relation with NO and ET in Patients with Premature Coronary Heart Disease of Blood Stasis and Phlegm Syndrome / 中国中医药信息杂志

Objective To research photoelectric facial blood flow volume characteristic of premature coronary heart disease of heart blood stasis syndrome (HBSS) and phlegm syndrome (PS), and its relation with NO and ET. Methods Patients of premature coronary heart disease of HBSS (36 cases) and PS (35 cases) were selected, with 31 health people as control. The parameter of photoelectric facial blood flow volume was detected with GD-3 photoelectric blood stream plethysm (PBSP) of the facial color-diagnosis. NO was determined by nitrate reductase method and ET was determined by RIA. Results Hb, He, Hf, Hb/Tab and Hf/Hb of HBSS decreased obviously compared with the control (P

Plasma leakage monitoring for the blood circle treatment system / 医疗卫生装备

This paper introduces the working principle of the blood circle treatment system outside the body. A monitoring instrument of plasma leakage suited for the blood circle treatment system outside the body is developed based on the absorption spectrum experiments of plasma leakage. Photoelectric detection technology and virtual instrumentation are utilized in the development. A series of detecting experiments of waste solution containing plasma with continuously changing concentration show the monitoring system possesses a relatively high sensitivity. Moreover, the experiments of continual detection with plasma concentration at one certain point indicate the monitoring system has a quite good stability. The monitoring instrument is adapted to dynamically detecting the plasma leakage when the blood circle treatment system outside the body is working.

Study and design of portable medical drop speed monitoring equipment / 医疗卫生装备

Objective To develop a portable medical drop speed monitoring equipment which can conveniently control the drop speed in infusion.Methods Taking the monolithic integrated circuit of 89C51 as a core,such units were designed as the master control unit,keyboard input system,drop speed detection,drop speed control,digital display,acousto-optics alarm circuit and electromotor drive.All circuit module units were connected in monolithic integrated circuit.The gathering data were transferred to monolithic integrated circuit in the form of electrical signals.After the operation,analysis and processing,monolithic integrated circuit transferred the data to demonstration module,electrical machinery and acousto-optics alarm circuit through the outlet.Results Automatically controlling the drop speed according to the difference of drop speed,this equipment can reach the required drop speed in 5~10s and maintain this speed with an error of 12 drops per minutes.Conclusion Portable medical drop speed monitoring equipment achieves the goal of the task and meets the clinical requirement.This equipment is worthy of popularizing.

Effect of the metal ceramic restoration on detecting color using photoelectric colorimeter / 实用口腔医学杂志

Objective: To detect whether the metal base of the metal-fused-to-ceramic restoration have the same color performance and can be tested as natural teeth, and to evaluate whether they have effect on the color value determination by means of the photoelectrometer. Methods:Two kinds of shade guides of metal ceramic restoration were measured by photoelectric colorimeter, and color difference are analyzed compared with natural teeth of the same color. Results:The empfindung (color difference) of the shade guides with or without metal base and natural teeth is significantly different (P

Discussion of Dual-Energy Imaging with the Dual-source Computer Tomography / 医疗卫生装备

Objective To investigate the principle and its clinical initial application of the dual-energy imaging with the dual-source CT and increase the realization of it. Methods According to the research results of the dual-energy imaging with the dual-source CT and the course of development of the dual-energy imaging to analyze and summarize the basis radiological physics, the principles, the correlation parameters and the clinical initial application of the dual -energy imaging with the dual -source CT. Results The dual -energy imaging with the dual -source CT is different from other common dual-energy imaging, it has its own special feature. Conclusion According to the analysis of the dual-energy imaging with the dual-source CT, greatly increase the realization of the dual-energy imaging with the dual-source CT.

Design and analysis of linear photo-electric isolating amplifier circuit with single power supply and full output / 医疗卫生装备

This paper introduces the design of a linear photoelectric isolating amplifier circuit, and analyzes the errors of the circuit in experiment. The problem of narrow dynamic range in low power isolating circuit is solved.

Method & Implementation for Automatic Blood Ingredient Separating and Transferring / 医疗卫生装备

Objective To propose a method & Implementation for automatic blood ingredient separating and transferring.Methods Whole blood could be layered after centrifugal processing,and the color of the layers appeared different certainly.So color sensors could be used to receive different color signals of ingredient blood to control the process of separating whole blood and transfer different blood ingredients to different blood bags.When plasma was extruded out of the whole blood,resistance-strain pressure sensor was used to get the weight,and the air was cleaned out through extrusion movement.Air cleaning automatic control was realized through examining the intensity of pressure in the blood bag by photoconductive resistance.When the process of separating blood finished completely,the glue pipes could be heated automatically.The device adopted main-subsidiary configuration,the master was mostly in charge of separating and transferring blood ingredients of whole blood and the assistor was used to extrude out the air remains in the plasma bag and get the weight of the plasma.Results The assistor was made actually by using a PC as a virtual master to conduct experiments debugging and improve the assistor,and then the precision of electronic weighing reached 0.5g while the air in blood bag was almost cleaned absolutely.A communication protocol was developed and the serial communication between the master and the assistor were realized by VC6.0.Conclusion This method and device can automatically separate and transfer different blood components fast and efficiently,thus meeting the automation needs of the blood station.