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There is not a very simple cause and effect relationship between health of farm workers, malaria, and revenue earned from agriculture. Our study was designed to understand this relationship, including all possible factors affecting agricultural output like malaria, sanitation conditions, socio economic status (SES), availability of health facilities, and the role of gender. Simultaneous equation modeling (SEM) was done to grab the underlying relationships. For assessing SES, a wealth index was created by using principle component analyses (PCA). To create the sanitation and availability of health facility indices we used multiple correspondence analysis (MCA). Results show that improvement in sanitation conditions and socio economic status have direct effects on probability of the occurrence of malaria. More investment on preventive measures and ensuring the availability of health facilities can lessen the disease burden in malaria-endemic areas that indirectly lead to the active participation of economically active members of the family. Our findings suggest that investment in women’s education and farmers’ training with particular focus on malaria can lead to an improvement in farmers’ health that will ultimately result in quality production and increase revenue from agriculture.
Atrioventricular annuli are important in haemodynamic flexibility, competence, and support for tricuspid and mitral valves. The anatomical features of the annuli, such as circumference, organisation of connective tissue fibres, myocardium, and cellularity, may predispose to annular insufficiency and valvular incompetence. These pathologies occur more commonly in females, although the anatomical basis for this disparity is unclear. Sex variation in the structure of the annuli is important in providing a morphological basis for the patterns of these diseases. This study therefore aimed to determine the sex variations in the structure of human atrioventricular annuli. One hundred and one hearts (48 males, 53 females) obtained from the Department of Human Anatomy of the University of Nairobi were studied. Annular circumferences were measured using a flexible ruler and corrected for heart weight. Results were analysed using SPSS version 17.0 and sex differences determined using student’s t-test. A p-value of less than 0.05 was considered significant. For light microscopy, specimens were harvested within 48 hours post-mortem, processed, sectioned, and stained with Masson’s trichrome and Weigert’s elastic stain with van Gieson counterstaining. Females had significantly larger annular circumferences than males after correcting for heart weight (p ≤ 0.05). Histologically, myocardium was consistently present in all male annuli while this was absent in females except in one specimen. The annuli were more elastic and cellular in males especially in the annulo-myocardial and annulo-valvular zones, respectively. The corrected larger annular circumference in females may limit heart valve coaptation during cardiac cycle and may be a risk factor for valvular insufficiency. The predominance of myocardium, annular cellularity, and elasticity may be more protective against heart valve incompetence in males than in females. (Folia Morphol 2012; 71: 1: 23–27)
Halophyte microbiome contributes significantly to plant performance and can provide information regarding complex ecological processes involved in osmoregulation of these plants. The objective of this study is to investigate the microbiomes associated with belowground (rhizosphere), internal (endosphere) and aboveground (phyllosphere) tissues of halophyte (Salsola stocksii) through metagenomics approach. Plant samples were collected from Khewra Salt Mines. The metagenomic DNA from soil, root and shoot samples was isolated with the help of FastDNA spin kit. Through PCR, the 16S rRNA gene from four different Salsola plants and wheat plants was amplified and cloned in InsTAclone PCR cloning kit. Metagenomic analyses from rhizosphere, endosphere and phyllosphere of Salsola showed that approximately 29% bacteria were uncultured and unclassified. Proteobacteria and Actinobacteria were the most abundant phyla in Salsola and wheat. However, Firmicutes, Acidobacteria, Bacteriodetes, Planctomycetes, Cyanobacteria, Thermotogae, Verrucomicrobia, Choroflexi and Euryarchaeota were predominant groups from halophyte whereas Actinobacteria, Proteobacteria, Firmicutes, Cyanobacteria, Acidobacteria, Bacteriodetes, Planctomycetes and Verrucomicrobia were predominant phyla of wheat samples. Diversity and differences of microbial flora of Salsola and wheat suggested that functional interactions between plants and microorganisms contribute to salt stress tolerance.
Sternal foramina may pose a great hazard during sternal puncture, due to inadvertent cardiac or great vessel injury. They can also be misinterpreted as osteolytic lesions in cross-sectional imaging of the sternum. On the other hand, variant xiphoid morphology such as bifid, duplicated, or trifurcated may be mistaken for fractures during imaging. The distribution of these anomalies differs between populations, but data from Africans is scarcely reported. This study therefore aimed to investigate the distribution and frequency of sternal foramina and variant xiphoid morphology in a Kenyan population. Eighty formalin-fixed adult sterna (42 males [M], 38 females [F]) of age range 18–45 years were studied during dissection at the Department of Human Anatomy, University of Nairobi. Soft tissues were removed from the macerated sterna by blunt dissection and foramina recorded in the manubrium, body, and xiphoid process. The xiphisternal ending was classified as single, bifurcated (2 xiphoid processes with a common stem), or duplicated (2 xiphoid processes with separate stems). Results were analysed using SPSS version 17.0. Foramina were present in 11 specimens (13.8%): 7 M, 4 F. The highest frequency was in the sternal body (n = 9), where they predominantly occurred at the 5th intercostal segment. Xiphoid foramina were present in 2 specimens (both males) (2.5%), while manubrial foramen was not encountered. The xiphisternum ended as a single process in 64 cases (34 M, 30 F) (80%). It bifurcated in 10 cases (5 M, 5 F) (12.5%), and duplicated in 6 cases (4 M, 2 F) (7.5%). There were no cases of trifurcation. Sternal foramina in Kenyans vary in distribution and show higher frequency than in other populations. These variations may complicate sternal puncture, and due caution is recommended. The variant xiphisternal morphology may raise alarm for xiphoid fractures and may therefore be considered a differential. (Folia Morphol 2012; 71, 1: 19–22)
Wastewater not only provides nutrients to the plant community but may cause abiotic stress conditions due to the presence of toxic substances. The present study was designed to explore wastewater-induced changes in maize seedlings using four different concentrations (0, 10, 50, and 100%) collected from three different sources, i.e., municipal wastewater (designated as MW), woolen mill wastewater (designated as WW) and polyvinylchloride wastewater (designated as PW) of the city of Bannu situated in Khyber Pakhtunkhwa, Pakistan. All physiological parameters such as germination, biomass, and length of maize seedlings gradually slowed down with the increase in wastewater concentration. Similarly, the photosynthetic pigments decreased, while an increase was calculated in Na+ and Ca++ and K+ ions in our present experiment. The malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents as well as antioxidative enzymes such superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX), and catalase (CAT) upregulated in all treated samples, while total soluble proteins increased. Various wastewater sources also caused genotoxic effects as revealed by the appearance and disappearance of various bands at DNA and protein levels. The present study reveals that different sources of wastewater caused differential stresses in maize seedlings, which might be due to the presence of different stressful agents in them.
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