378 research outputs found
Effect of Methanol extract of Musca domestica larva on some Enzymes and Haematological parameters in Trypanosoma brucei brucei - infected rats
This study investigated the effect of methanol extract of Musca domestica (400mg/kg body weight) on some biomarker enzymes and haematological parameters in Trypanosoma brucei brucei - infected rats. Twenty albino rats were intraperitoneally infected with Trypanosoma brucei brucei and were grouped into five (5) groups of four (4) rats each. Group1 was set up as infected not treated (0.2ml normal saline/kg body weight), group 2 was treated with diaminazene aceturate (standard drug), group 3 as prophylactic treated (treatment for 72 hours before inoculation of parasite), group 4 as early treatment with the extract (treatment commenced after the sight of parasite) and group 5 as the control (uninfected untreated) group. Results shows significant (p<0.05) decrease in liver AST and ALT activities with concomitant increase in serum activities of the infected untreated rats when compared with the early treated, prophylactic treated, standard treated and normal control. Serum ALP activity of the infected not treated group was significantly (p<0.05) higher when compared to the control group and other experimental groups. No significant (p>0.05) difference in the liver ALP activities of the extract treated infected groups with standard drug treated group However, serum and liver GGT activities of the uninfected untreated (control) was significantly lower (p<0.05) than all the other experimental groups. Haematological studies shows significant decrease (p<0.05) in packed cell volume (PCV) , haemoglobin concentration (Hb) and red blood cell count (RBC) of infected not treated when compared to infected prophylactic treated and infected early treated. There was likewise significant increase in white blood cell count (WBC) of infected not treated compared to infected prophylactic treated and infected early treated. Findings from this study showed that methanol extract of Musca domestica larva has trypanocidal properties thereby ameliorating the T. brucei induced biochemical changes in rats.Key words: Musca domestica larva, Haematology, Trypanosomiasis, Enzymes, Methanol, Extract
A Review of Some Agricultural Wastes in Nigeria for Sustainability in the Production of Structural Concrete
A review of agricultural wastes available in Nigeria that is suitable for use in concrete industry, in order to attain sustainability in structural concrete production and practice, is presented in this paper. The wastes reviewed are: Cassava Peel Ash (CPA), Empty Palm Oil Fruit Brunch Ash (EPO-FBA), Rice Husk Ash (RHA), and Saw Dust Ash (SDA). Others were Palm Kernel Shell Ash (PKSA), Groundnut Husk Ash (GHA), Corncob Ash (CA), and Egg Shell Powder (ESP). The study revealed that some agricultural wastes that have potential for use as supplementary cementing material (SCM) for cement in the production of structural concrete abounds in Nigeria. It was also revealed that the necessity of standardization of procedures for testing of such wastes so that structural performance index can be compared. In addition, there is also the need for the development of classification methods similar to that of fly ash, so that their use can be enhanced. Using these waste materials in concrete will lead to sustainability in concrete production, reduction in the use of natural non-renewable resources, innovativeness in the use of wastes, and the development of small-scale industries
THE MOST ECONOMICAL CONFIGURATION OF PUSHED BARGE CONVOY SYSTEM THROUGH CAIRO-ASWAN WATERWAY
In the recent years, as a result of the economical situation in Egypt, fuel price is rapidly increased. Consequently, the cost of cargo transport is also increased. Therefore, the aim of the present paper is to check the feasibility of a pushed barge convoy system working through Cairo-Aswan waterway as an alternative mean of cargo transport in order to encourage the transport companies to transport their cargoes through river Nile which is considered the cheapest transport mode in Egypt.
In this paper, the current situation of the river transport and the characteristics of the Egyptian inland waterways network are reviewed and investigated to identify the navigation problems and constraints which affect the navigation through Cairo-Aswan waterway. The basic concept of ship controllability is reviewed to clarify the maneuver characteristics of a pushed barge convoy system in shallow waterways. Also, different configurations for pushed barge convoy system are proposed and the required power of each configuration is calculated using a specially developed computer program.
A technical and operational measure called transport efficiency is used as a criterion to get the most economical configuration of the desired pushed barge convoy system. Finally, a comparison between the pushed barge convoy system and the existing river transport means in Egypt is made to clarify the feasibility of using pushed barge convoy system through Cairo-Aswan waterway
Post-duodenal polypectomy pancreatitis: an uncommon iatrogenic trigger
Acute pancreatitis (AP) is a major cause of gastrointestinal-related admission in the United States, characterized by epigastric pain radiating to the back, and nausea and vomiting. Although commonly associated with alcohol consumption and gallstones, cases involving less frequent triggers, such as post-endoscopy, have been reported. We present an unusual case of post-polypectomy pancreatitis following esophagogastroduodenoscopy (EGD). A 20-year-old woman underwent polypectomy during a bariatric EGD screening procedure, resulting in a 2 mm non-bleeding pedunculated polyp's polypectomy from the second part of the duodenum. She experienced excruciating abdominal pain, nausea, and vomiting within an hour. Following an emergency evaluation, the diagnosis of acute pancreatitis was made; this was supported by increased lipase enzyme and physical manifestation. While AP tends to be triggered by well-known reasons, this particular case highlights a distinctive iatrogenic trigger-duodenal polypectomy. Only a handful of similar cases have been documented. The duodenum's peculiar proximity to important pancreatic structures may result in mechanical injury or heat-induced pancreatic damage. The management, similar to typical acute pancreatitis care, underscores the importance of supportive measures. This rare case of post-polypectomy pancreatitis emphasizes the risk of iatrogenic complications. Timely diagnosis and surveillance following procedures involving the duodenum can help with early diagnosis
A prospective, randomised comparison of continuous paravertebral block and continuous intercostal nerve block for post-thoracotomy pain
Background: This study aimed to compare paravertebral block and continuous intercostal nerve block after thoracotomy.Methods: Forty-six adult patients undergoing elective posterolateral thoracotomy were randomised to receive either a continuous intercostal nerve blockade or a paravertebral block. Opioid consumption and postoperative pain were assessed for 48 hours .Pulmonary function was assessed by forced expiratory volume in 1 s (FEV1) recorded at 4 hours intervals.Results: With respect to the objective visual assessment (VAS), both techniques were effective for post thoracotomy pain. The average VAS score at rest was 29±10mm for paravertebral block and 31.5±11mm for continuous intercostal nerve block. The average VAS score on coughing was 36±14mm for the first one and 4 ±14mm for the second group. Pain at rest was similar in both groups. Pain scores on coughing were lower in paravertebral block group at 42 and 48 hours. Post-thoracotomy function was better preserved with paravertebral block. No difference was found among the two groups for side effects related to technique, major morbidity or duration of hospitalisation.Conclusion: We found that continuous intercostal nerve block and paravertebral block were effective and safe methods for post-thoracotomy pain.
Muon (g-2) Technical Design Report
The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 at the Brookhaven National Laboratory AGS. The E821 result appears to be greater than the Standard-Model prediction by more than three standard deviations. When combined with expected improvement in the Standard-Model hadronic contributions, E989 should be able to determine definitively whether or not the E821 result is evidence for physics beyond the Standard Model. After a review of the physics motivation and the basic technique, which will use the muon storage ring built at BNL and now relocated to Fermilab, the design of the new
experiment is presented. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2/3 approval
Single Nucleotide Polymorphisms in HIF-1A, VEGFa, and VHL Genes: A Comparative Study between Sea Level and High-Altitude Residents in West Saudi Arabia
Background: This comprehensive molecular study investigates the genetic variations in individuals residing at different altitudes in West Saudi Arabia, specifically contrasting sea-level residents in Jeddah (SL) with high-altitude dwellers in Taif (HA). The study focuses on the significant role of genetic adaptations in response to environmental challenges, particularly hypoxia. Understanding these genetic differences according to geographical location is crucial for multiple reasons. It not only sheds light on the adaptive mechanisms that humans develop in response to environmental stressors like reduced oxygen levels but also has broader implications for medical, anthropological, and evolutionary studies. By exploring how distinct populations adapt to their environments, this research provides valuable insights into the complex interplay between genetics, health, and disease, highlighting the importance of considering genetic diversity in medical and genetic research.Methods: The research involved amplifying and sequencing three pivotal genes associated with hypoxia adaptation: Hif-1a, VEGFa, and VHL. Advanced genomic techniques were utilized to analyze samples from 22 volunteers, 10 from the sea level region of Jeddah and 12 from the high-altitude region of Taif. The study aimed to identify and analyze single nucleotide polymorphisms (SNPs) in these genes and their implications in altitude adaptation.Results: Distinct SNPs were identified in the Hif-1a, VEGFa, and VHL genes, with high-altitude residents displaying more pronounced variations. The phylogenetic analysis demonstrated clear genetic clustering based on altitude, highlighting the molecular adaptations induced by altitude variations. The study reveals a complex interplay between genetics and environmental conditions, significantly contributing to our understanding of human adaptation to high altitudes.Conclusion: This research underscores the profound impact of altitude on human genetics. The findings provide critical insights into how genetic variations facilitate adaptation to challenging environmental conditions, such as hypoxia, encountered at high altitudes. These insights have broad implications, potentially informing medical research related to altitude sickness and other altitude-related health issues.Keywords: High-Altitude Adaptation; Single Nucleotide Polymorphisms (SNPs); Hif-1a Gene; VEGFa Gene; VHL Gene; Phylogenetic Analysis; Saudi Arabian Populations
The Mu3e Data Acquisition
The Mu3e experiment aims to find or exclude the lepton flavor violating decay μ+→e+e−e+ with a sensitivity of one in 10 16 muon decays. The first phase of the experiment is currently under construction at the Paul Scherrer Institute (PSI, Switzerland), where beams with up to 10 8 muons per second are available. The detector will consist of an ultra-thin pixel tracker made from High-Voltage Monolithic Active Pixel Sensors (HV-MAPS) , complemented by scintillating tiles and fibers for precise timing measurements. The experiment produces about 100Gbit/s of zero-suppressed data, which are transported to a filter farm using a network of field programmable gate arrays (FPGAs) and fast optical links. On the filter farm, tracks and three-particle vertices are reconstructed using highly parallel algorithms running on graphics processing units, leading to a reduction of the data to 100 Mbyte/s for mass storage and offline analysis. This article introduces the system design and hardware implementation of the Mu3e data acquisition and filter farm
New cryptosporidium genotypes in HIV-infected persons.
Using DNA sequencing and phylogenetic analysis, we identified four distinct Cryptosporidium genotypes in HIV-infected patients: genotype 1 (human), genotype 2 (bovine) Cryptosporidium parvum, a genotype identical to C. felis, and one identical to a Cryptosporidium sp. isolate from a dog. This is the first identification of human infection with the latter two genotypes
Expression of CD82 in Human Trophoblast and Its Role in Trophoblast Invasion
BACKGROUND: Well-controlled trophoblast invasion at maternal-fetal interface is a critical event for the normal development of placenta. CD82 is a member of transmembrane 4 superfamily, which showed important role in inhibiting tumor cell invasion and migration. We surmised that CD82 are participates in trophoblast differentiation during placenta development. METHODOLOGY/PRINCIPAL FINDINGS: CD82 was found to be strongly expressed in human first trimester placental villous and extravillous trophoblast cells as well as in trophoblast cell lines. To investigate whether CD82 plays a role in trophoblast invasion and migration, we further utilized human villous explants culture model on matrigel and invasion/migration assay of trophoblast cell line HTR8/SVneo. CD82 siRNA significantly promoted outgrowth of villous explants in vitro (P<0.01), as well as invasion and migration of HTR8/SVneo cells (P<0.05), whereas the trophoblast proliferation was not affected. The enhanced effect of CD82 siRNA on invasion and migration of trophoblast cells was found associated with increased gelatinolytic activities of matrix metalloproteinase MMP9 while over-expression of CD82 markedly decreased trphoblast cell invasion and migration as well as MMP9 activities. CONCLUSIONS/SIGNIFICANCE: These findings suggest that CD82 is an important negative regulator at maternal-fetal interface during early pregnancy, inhibiting human trophoblast invasion and migration
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