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1.
Braz J Biol ; 83: e276814, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37970908

RESUMO

Integrated nutrient management is a promising way to avoid plant nutrient shortages because of the positive relationship between the bioavailability of nutrients and greater economic interest in their application through organic amendments and microbial application. To examine how compost, charcoal, and rhizobium influence maize development, an experiment was set up in a container. In addition to the appropriate amounts of nitrogen, phosphorous, and potassium, the soil in the allotted pots was treated with 50 ml of rhizobium, 5 tonnes of compost, and 2.5 tonnes of biochar before maize seeds were planted. A total of nine treatments (with three replicates each) were arranged in a completely randomized design for this experiment. Various agronomic, chemical, and physiological data were measured and recorded after the crop was harvested 110 days after sowing. The results showed that when biochar, compost, and rhizobium were applied together, the root fresh biomass rose by 43.4%, the root dry biomass increased by 38.3%, and the shoot length increased by 61.7%, compared to the control treatment. Chlorophyll content (41.3% higher), photosynthetic rate (58.5% higher), transpiration rate (64.4% higher), quantum yield (32.6% higher), and stomatal conductivity (25.3% higher) were all significantly improved compared to the control. Soil levels of nitrogen, phosphorus, and potassium were also improved with this treatment compared to the control. The combined use of biochar, compost, and rhizobium was more successful than any of the components used individually in boosting maize yields. Based on the findings of our study, the integration of rhizobium, biochar, and compost within a unified treatment shown a substantial enhancement in both the growth and yield of maize.


Assuntos
Solo , Zea mays , Solo/química , Fertilizantes , Fósforo , Plantas , Potássio , Nitrogênio/análise
2.
Braz J Biol ; 83: e273843, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37466515

RESUMO

Instead of typical household trash, the heavy metal complexes, organic chemicals, and other poisons produced by huge enterprises threaten water systems across the world. In order to protect our drinking water from pollution, we must keep a close eye on the situation. Nanotechnology, specifically two-dimensional (2D) nanomaterials, is used in certain wastewater treatment systems. Graphene, g-C3N4, MoS2, and MXene are just a few examples of emerging 2D nanomaterials that exhibit an extraordinary ratio of surface (m3), providing material consumption, time consumption, and treatment technique for cleaning and observing water. In this post, we'll talk about the ways in which 2D nanomaterials may be tuned to perform certain functions, namely how they can be used for water management. The following is a quick overview of nanostructured materials and its possible use in water management: Also discussed in length are the applications of 2D nanomaterials in water purification, including pollutant adsorption, filtration, disinfection, and photocatalysis. Fluorescence sensors, colorimetric, electrochemical, and field-effect transistors are only some of the devices being studied for their potential use in monitoring water quality using 2D nanomaterials. Utilizing 2D content has its benefits and pitfalls when used to water management. New developments in this fast-expanding business will boost water treatment quality and accessibility in response to rising awareness of the need of clean, fresh water among future generations.


Assuntos
Nanoestruturas , Purificação da Água , Nanoestruturas/química , Nanotecnologia/métodos , Purificação da Água/métodos , Qualidade da Água
3.
Braz J Biol ; 83: e271809, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37222373

RESUMO

The 2030 Sustainable Development Goals of the United Nations include a strong emphasis on ending hunger worldwide. According to the 2019 Global Food Security Index, while 88% of countries claim there is sufficient food supply in their country, the sad reality is that 1 in 3 countries is facing insufficient availability of food supply, which means that in those countries, more than 10% of the population is malnourished. Since nutrition is crucial to leading a healthy life and satisfying food security needs, several governments have turned to national nutrition surveys to gauge the extent of malnutrition in their populations. Plants are able to grow, develop, and store nutrients by photosynthesis, which convert light into chemical energy through cell redox regulatory networks. A photosynthesis system's electron flow may be adjusted to accommodate varying light and environmental circumstances. Many techniques exist for controlling the flow of electrons emitted during light processes in order to save or waste energy. The two protein molecules TROL and flavoenzyme ferredoxin (oxidoreductase+NADP) (FNR) interact dynamically to form an excellent molecular switch capable of splitting electrons from the photosystem. The TROL-FNR bifurcation may be limited by either generating NADPH or preventing reactive oxygen species from propagating. TROL-based genome editing is an experimental method for enhancing plant stress and defensive responses, efficiency, and ultimately agricultural production.


Assuntos
Agricultura , NADP
4.
J Submicrosc Cytol Pathol ; 34(3): 335-43, 2002 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-12408368

RESUMO

We described the behaviour of 120 days rabbit knee-meniscus cells in monolayer culture. The cells were grown forming cellular aggregates resembling true cellular nodules. Three stages of development of these nodules could be observed: formation of the cellular nodules between days 1 and 3; nodular growth, with their maximal at day 5; and nodular regression beginning at day 8. Ultrastructural analysis of the extracellular matrix of these cellular nodules was assessed on days 3, 5 and 8. At the formation stage, we could observe striated collagen fibrils and small bundles of tubular microfibrils either interspersed with very low quantities of amorphous elastin, being morphologically identical to elaunin fibers, or without only trace of elastin, being morphologically identical to oxytalan fibers. By day 5, fibrillar elements with 100 nm periodic ladder-like collagen VI fibrillar aggregates could also be detected. At day 8, the striated collagen fibrils and oxytalan fibers could not be observed. During this same period, there was an increase of a dense matrix comprised of collagen VI and mature elastic fibers. Chondroitin/dermatan sulfate proteoglycans were synthesized and became essential for the arrangement of collagen type VI, since chondroitinase ABC treatment of the culture disrupted collagen VI assembly, associated with the large spaces near the cell surface. In addition, the cells lost their fusiform morphology and changed into rounded cells. The results show that primary cultures of rabbit meniscus fibrochondrocytes maintain their capacity to form chondro-like structures in vitro. The organization process was rapid and uniform throughout the entire culture presuming that the normal signal transduction pathways are maintained intact and that essential factors in some phases of tissue organization are present.


Assuntos
Condrócitos/metabolismo , Fibroblastos/metabolismo , Meniscos Tibiais/metabolismo , Animais , Células Cultivadas , Condrócitos/ultraestrutura , Colágeno/biossíntese , Colágeno/ultraestrutura , Matriz Extracelular/metabolismo , Matriz Extracelular/ultraestrutura , Feminino , Fibroblastos/ultraestrutura , Membro Posterior , Masculino , Meniscos Tibiais/citologia , Microscopia Eletrônica , Coelhos
5.
Rev Bras Enferm ; 48(2): 161-7, 1995.
Artigo em Português | MEDLINE | ID: mdl-8715733

RESUMO

This paper presents a bibliographic review about osteoporosis, point out the concept, physiopathology, types and risk factors. It emphasizes how the health team must develop the assistance according the different types of osteoporosis, mainly the preventive measures that can retard or even stop this disease, like: the supplementation of calcium and vitamin D in the diet if necessary, the hormonal therapy and physical activity.


Assuntos
Osteoporose/prevenção & controle , Cálcio da Dieta , Terapia de Reposição de Estrogênios , Feminino , Humanos , Masculino , Osteoporose/etiologia , Osteoporose/fisiopatologia , Prevenção Primária , Fatores de Risco , Vitamina D/uso terapêutico
6.
Enfoque ; 19(4): 4-5, 1991 Dec.
Artigo em Português | MEDLINE | ID: mdl-1782915

RESUMO

The study was developed in order to give patients carrying a plaster cast orientation into self-care. The authors supported their work on pre-existing works on the same theme. They point to Education for health as a means for health professionals to prevent problems arising from misinformation to people under medical attendance.


Assuntos
Moldes Cirúrgicos , Educação de Pacientes como Assunto , Humanos , Autocuidado
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