检索结果-南通市图书馆

Synthesis of Agnps By Bacillus Cereus Bacteria and Their Antimicrobial Potential

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biomaterials and Nanobiotechnology 2011年第2期2卷 155-161页

作者： Anuradha Prakash Seema Sharma naheed ahmad Ashok Ghosh Preety Sinha 不详

In the present work silver nanoparticles (AgNPs) were synthesized extracellularly by bacteria Bacillus cereus collected from the riverine belt of Gangetic Plain of India. The microbes were isolated, screened and characterized by morphological and biochemical analyses. The silver resistant strain was exposed to different concentrations of silver salt (AgNO3). UV-visible spectrum of the supernatant of cell culture showed absorbance peak of AgNPs at ~ *** shape and size of AgNPs were ascertained by High Resolution Transmission Electron Micrography (HRTEM), X-ray diffraction (XRD) and Energy Dispersive spectroscopy (EDS). Average size of the synthesized AgNPs was found to be in the range of 10-30 nm with spherical shape. AgNPs were tested against antibacterial potential of some common human pathogens.

关键词： AgNPs XRD HRTEM Antimicrobial

Synthesis of Crystalline Ag Nanoparticles (AgNPs) from Microorganisms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2010年第1期1卷 1-7页

作者： Seema Sharma naheed ahmad Anuradha Prakash Vidya Nand Singh Ashok Kumar Ghosh Bodh Raj Mehta 不详

Bacteria obtained from the isolates of the biodiversity of riverine coast of Ganga identified as Bacillus Koriensis, when challenged with silver nitrate solution accumulated silver nanoparticles on the surface of its cell wall. These nanoparticles showed an absorption peak at 438 nm in UV-visible spectrum corresponding to the plasmon resonance of AgNPs. The transmission electron micrographs of nanoparticles in aqueous solution showed the production of reasonably monodisperse AgNPs (average particle size: 9.92 ±1.311 nm) by the bacteria. X-ray diffraction spectrum of the nanoparticles confirmed the formation of metallic silver.

关键词： Crystal Structure Nanostructures Metal AgNPs

Risk factors for hepatocellular carcinoma associated with hepatitis C genotype 3 infection:A systematic review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第4期16卷 1596-1612页

作者： Hamzah Z Farooq Michael James Jane Abbott Patrick Oyibo Pip Divall naheed Choudhry Graham R Foster Blizard Institute Queen Mary University of LondonLondon E12ATUnited Kingdom School of Health and Psychological Sciences University of LondonLondon EC1V 0HBUnited Kingdom University Hospitals of Leicester Library University Hospitals of Leicester NHS TrustLeicester LE39QPUnited Kingdom

BACKGROUND Hepatitis C virus(HCV)is a blood-borne virus which globally affects around 79 million people and is associated with high morbidity and *** infection leads to cirrhosis in a large proportion of patients and often causes hepatocellular carcinoma(HCC)in people with *** the 6 HCV genotypes(G1-G6),genotype-3 accounts for 17.9%of *** genotype-3 responds least well to directly-acting antivirals and patients with genotype-3 infection are at increased risk of HCC even if they do not have *** To systematically review and critically appraise all risk factors for HCC secondary to HCV-G3 in all ***,we studied possible risk factors for HCC due to HCV-G3 in the literature from 1946 to *** This systematic review aimed to synthesise existing and published studies of risk factors for HCC secondary to HCV genotype-3 and evaluate their strengths and *** searched Web of Science,Medline,EMBASE,and CENTRAL for publications reporting risk factors for HCC due to HCV genotype-3 in all settings,*** Four thousand one hundred and forty-four records were identified from the four databases with 260 records removed as *** thousand eight hundred and eighty-four records were screened with 3514 *** hundred and seventy-one full-texts were assessed for eligibility with seven studies included for *** the seven studies,three studies were retrospective case-control trials,two retrospective cohort studies,one a prospective cohort study and one a cross-sectional study *** were based in hospital settings with four in Pakistan,two in South Korea and one in the United *** total number of participants were 9621 of which 167 developed HCC(1.7%).All seven studies found cirrhosis to be a risk factor for HCC secondary to HCV genotype-3 followed by higher age(five-studies),with two studies each showing male sex,high alpha feto-protein,directly-acting antivirals trea

关键词： Hepatocellular carcinoma Hepatitis C Genotype 3 Systematic review Blood-borne viruses Liver cancer

Biochemical analysis of granzyme H and elucidation of its structurally important residues involved in substrate and inhibitor binding

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Chinese Pharmaceutical Sciences 2012年第1期21卷 33-39页

作者： naheed Z Razwi Rukhshan Khurshid Mahjabeen Saleem Sabiha Karim Saeed ahmad Nagra Asmat Salim Department of Biochemistry CMH Lahore Medical CollegeLahorePakistan Fatima Jinnah Medical College LahorePakistan Institute of Biochemistry and Biotechnology University of the PunjabLahorePakistan College of Pharmacy University of the PunjabLahore Institute of Chemistry University of the PunjabLahorePakistan Dr.Panjwani Center for Molecular Medicine and DrugResearch International Center for Chemical and Biological SciencesKarachi UniversityPakistan

Apoptotic cell death plays an important role in the maintenance of the normal physiological state and in the pathogenesis of *** exocytosis is the main pathway for the immune elimination of virus-infected cells and tumor cells by cytotoxic T lymphocytes and natural killer *** recent study,we have investigated the level of granzyme H in patients with breast cancer and in control subjects using enzymatic *** study also included the prediction of different sites of granzyme H that play a role in substrate and inhibitor recognition in apoptosis process by using 3D structural model of the *** research described the possible post-translational modification sites that may help the enzyme in immune elimination of tumor *** study shows that the level of granzyme H was reduced in patients when compared to normal control *** are a number of amino acids that function as substrate recognition sites in granzyme ***,inhibitors may inhibit their activity and affect the process of autolysis.

关键词： Autolysis Granzyme H Apoptosis Post translational modification

Nipah Virus Unveiled: A Review Article

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advances in Bioscience and Biotechnology 2024年第3期15卷 161-173页

作者： Munama Magdum Md. Abir Tazim Chowdhury Mahmuda Khandaker Razdip Datta Md. naheed Rayhan Md. Siffat Uddin Md. Junayed Imam Bhuiyan Md. Ahaduzzaman Md. Abdullah Al-Mahammud Kabir Mohammad Zishan Uddin Md. Estiak Ullah Sahid Subrata Saha Department of Community Medicine Shaheed Monsur Ali Medical College Dhaka Bangladesh Department of Cardiothoracic and Vascular Surgery Evercare Hospital Dhaka Bangladesh Department of Microbiology Shaheed Monsur Ali Medical College Dhaka Bangladesh Department of Anesthesia Dhaka Dental College & Hospital Dhaka Bangladesh Department of Cardiothoracic Anesthesia Evercare Hospital Dhaka Bangladesh Department of Medicine Times Multicare Hospital Ltd. Dhaka Bangladesh Barking Havering and Redbridge University Hospitals NHS Trust Romford UK

Nipah virus (NiV) is a highly infectious zoonotic pathogen that poses a significant threat to human and animal health. First identified in Malaysia in 1998, NiV has since caused several outbreaks in Southeast Asia, with sporadic cases reported in Bangladesh and India. The virus is primarily transmitted to humans through direct contact with infected animals, primarily fruit bats, or through the consumption of contaminated fruits and their juices. NiV infection presents a wide spectrum of clinical features, ranging from mild respiratory illness to severe encephalitis, with a high case fatality rate. The incubation period typically ranges from 4 to 14 days, during which patients develop fever, headache, myalgia, and respiratory symptoms such as cough and sore throat. As the disease progresses, neurological signs become prominent, including altered consciousness, seizures, and focal deficits. Severe cases may exhibit acute respiratory distress syndrome and multi organ failure. Laboratory findings often include lymphocytopenia, thrombocytopenia, and elevated liver enzymes. Diagnosis of NiV infection requires specialized laboratory testing, including reverse transcription-polymerase chain reaction (RT-PCR) and serological assays. Currently, no specific antiviral treatment exists for NiV infection, and management primarily focuses on supportive care. Prevention and control strategies encompass public health interventions, surveillance, and raising awareness among healthcare providers and the general population. The emergence and re-emergence of NiV highlight the urgent need for continued research, improved diagnostic capabilities, and the development of effective vaccines and therapeutics to mitigate the impact of this deadly virus.

关键词： Nipah Virus Zoonotic Pathogen Outbreaks Surveillance

On Riemann-Type Weighted Fractional Operators and Solutions to Cauchy Problems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2023年第7期136卷 901-919页

作者： Muhammad Samraiz Muhammad Umer Thabet Abdeljawad Saima naheed Gauhar Rahman Kamal Shah Department of Mathematics University of SargodhaP.O.Box 40100Sargodha40100Pakistan Department of Mathematics and Sciences Prince Sultan UniversityP.O.Box 66833Riyadh11586Saudi Arabia Department of Medical Research China Medical UniversityTaichung40402Taiwan Department of Mathematics and Statistics Hazara University MansehraMansehra21300Pakistan Department of Mathematics University of MalakandChakdara Dir(L)KPK18000Pakistan

In this paper,we establish the new forms of Riemann-type fractional integral and derivative *** novel fractional integral operator is proved to be bounded in Lebesgue space and some classical fractional integral and differential operators are obtained as special *** properties of new operators like semi-group,inverse and certain others are discussed and its weighted Laplace transform is *** integro-differential freeelectron laser(FEL)and kinetic equations are *** solutions to these new equations are obtained by using the modified weighted Laplace *** Cauchy problem and a growth model are designed as applications along with graphical ***,the conclusion section indicates future directions to the readers.

关键词： Weighted fractional operators weighted laplace transform integro-differential free-electron laser equation kinetic differ-integral equation

Flexural and Dynamic Mechanical Properties of Alkali-Treated Coir/Pineapple Leaf Fibres Reinforced Polylactic Acid Hybrid Biocomposites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2021年第6期18卷 1430-1438页

作者： Ramengmawii Siakeng Mohammad Jawaid Mohammad Asim Hassan Fouad Sameer Awad naheed Saba Suchart Siengchin Department of Mechanical and Process Engineering The Sirindhorn International Thai-GermanGraduate School of Engineering(TGGS)King Mongkut’s University of Technology North BangkokBangkok10800Thailand Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400 UPMSerdangSelangorMalaysia Applied Medical Science Department Community CollegeKing Saud UniversityP.O.Box 10219Riyadh11433Saudi Arabia Chemistry School of Science and TechnologyUniversity of New EnglandArmidaleNSW2351Australia

Polylactic acid(PLA)possesses good mechanical and biodegradability properties which make it a suitable material for polymer composites whereas brittleness and high costs limit its utilization in various *** reinforcement of natural fibres with biopolymers has been formed to be an efficient technique to develop composites having the ability to be fully *** study concerns with the incorporation of various percentages of untreated and alkali-treated Coir Fibres(CF)and pineapple leaf fibres(PALF)in PLA biocomposites and characterizations of flexural,morphological and dynamic mechanical *** properties showed that the treated C1P1 hybrid composites(C1P1A)displayed highest flexural strength(35.81 MPa)and modulus(5.28 GPa)among all hybrid *** Electron Microscopy(SEM)revealed a behaviour of fibre-matrix adhesion in untreated treated *** observation revealed good dispersion of the fillers in *** mechanical analysis revealed that C1P1A showed highest glass transition temperature(Tg)and storage modulus(E')while untreated C3P7 displayed the least Tg and E'.Overall findings showed that alkali-treated hybrid biocomposites(CF/PALF/PLA)especially C1P1A have improved flexural properties,dynamic and morphological properties over untreated *** of these findings will provide attracting consideration of these hybrid biocomposites for various lightweight uses in a broad selection of industrial applications such as biomedical sectors,automobile,construction,electronics equipment,and hardware tools.

关键词： Coir fibres Pineapple leaf fibres Biocomposites Polylactic acid Mechanical properties Dynamic mechanical properties

Narrow Band Imaging Can Be Used for Anastomotic Assessment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surgical Science 2016年第2期7卷 126-135页

作者： Ahmed Z. Kaleem Nabish naheed Syed M. ahmad Department of Colorectal Surgery Northern Lincolnshire and Goole Hospital Scunthorpe UK NHS Foundation Trust Scunthorpe General Hospital Scunthorpe UK

Background: Anastomotic leak is the most dreaded complication and it accounts for one third of post-operative deaths in colorectal surgery. There is strong need of research in this field in order to reduce anastomotic leak rate. If there was a test available to signify probability of leak at the time of surgery, it would potentially avoid a leak at a later date. Aim: We propose that intra operative use of narrow band imaging colonoscopy in left sided colonic anastomosis can predict and detect anastomosis related problems, problems i.e. vascularity, anastomotic lumen patency and rigidness of anastomosis which in turn lead to correction at the time of surgery resulting in significant decrease in anastomotic leak rate associated with morbidity and mortality. Methodology: A pilot, single blind, prospective, randomised controlled trial. Aim is to divide patient in 2 groups, containing 15 patients in each group. One group will be assessed by intra-operative NBI colonoscopy and other with standard technique. Analysis: This will be performed using SPSS with the help of statistician. Significance: This area of research is particularly important because it improves survival by reducing morbidity and mortality associated with anastomotic leak. If a leak is avoided then it does not only mean early recovery but it also saves NHS in terms of ICU care, NHS bed, inpatient nursing care and home help, unfortunately all required if leak is to occur. As a result, this research will have better financial implication with significantly improve patient care.

关键词： Anastomotic Leak Colorectal Surgery Anastomotic Assessment

Evidencing Personal &Professional Development, Perspective of a Surgical Trainee

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surgical Science 2016年第3期7卷 157-169页

作者： A. Z. Kaleem N. naheed S. M. ahmad Scunthorpe General Hospital North Lincolnshire & Goole NHS Foundation Trust Scunthorpe UK

Introduction: The author strongly believes that there is a continuous need for personal and professional development in order to keep and improve an individual career path way. It is also imperative to provide evidence of these acquired skills and attributes. According to General medical council, it is a responsibility of every doctor to be competent and up to date. This should be achieved by regularly taking part in activities that maintain and further develop competence and performance. This in turn ensures safety and care to patients [1]. Methodology: The author has had excellent opportunities in his career to participate in diverse personal and professional development programmes. It was important to participate in these programmes to achieve career progression. He would like to share three recent activities from his curriculum vitae which resulted in his significant personal and professional development. The author also had his revalidation last year and found to be fit to practice for next 5 years till next revalidation. The author followed an agreed action plan with his supervisor to accomplish this work. Realistic goals and time frame was set with the help of supervisor. Subsequently, the author had a chance to critically analyse below mentioned three different activities, in order to explore all the achieved learning themes behind these events. The author was fortunate enough to be involved into three different personal and professional development programmes. Firstly, he managed a regional colorectal conference and attained an excellent management experience from that conference. He learnt a lot about better time management. He came to know about different management theories and models and is now able to use these theories for his future management responsibilities. Then he had a communication challenge and difficulty in theatre. He was able to resolve that issue with his strong communication skills. He developed his communication skills and assertiveness

关键词： Professional Development Surgical Trainee Individual Career Revalidated