检索结果-南通市图书馆

Assessment of the Contribution of Foliar Trichomes towards Allelopathy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2020年第2期89卷 291-301页

作者： Waseem Mushtaq M.B.siddiqui Hesham F.Alharby Khalid Rehman Hakeem Allelopathy Laboratory Department of BotanyAligarh Muslim UniversityAligarh202002India Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Princess Dr Najla Bint Saud Al-Saud Center for Excellence Research in Biotechnology King Abdulaziz UniversityJeddahSaudi Arabia

Plant trichomes vary in their structure and cellular *** trichomes contain a bulk of specific(secondary)metabolites of diverse *** are connected with various adaptive processes,which include protection against herbivores and pathogens as *** study investigates the allelopathic contribution of structures present on the leaf surface of Nicotiana plumbaginifolia *** seedling growth of Cicer arietinum *** infusion obtained after dipping Nicotiana leaves in Dichloromethane(DCM)for 10 seconds(s)was the most phytotoxic among all the *** observed inhibition in Cicer growth was not only dependent on type of infusion but also the *** electron microscopy of the leaf samples showed the modifications in trichomes under the influence of the different concentration of *** trichomes were most dehydrated at 10 seconds in DCM,suggesting their role for the observed *** study on the biochemistry of trichomes and their phytotoxicity may develop highly valuable objects for plant metabolic engineering.

关键词： Allelopathy phytotoxicity secondary metabolites medicinal plants

Antiacanthamoebic properties of natural and marketed honey in Pakistan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2016年第11期6卷 967-972页

作者： Farzana Abubakar Yousuf Malik Hassan Mehmood Abdul Malik Ruqaiyyah siddiqui Naveed Ahmed Khan Department of Biological and Biomedical Sciences Aga Khan University Department of Biological Sciences Faculty of Science and Technology Sunway University

Objective: To determine antiacanthamoebic activity of natural and marketed honey ***: Natural honey samples were collected directly from the bee hive and marketed honey samples were purchased from the local market in Karachi, Pakistan. Both honey samples were tested for their flavonoid content(quercetin equivalent per gram of the extract) and phenolic content(gallic acid equivalent per gram). Furthermore, their antioxidant activity was determined by measuring 2,2-diphenyl-1-picrylhydrazyl. Using amoebistatic and amoebicidal assays, the effects of honey samples were tested against growth and viability of Acanthamoeba ***: Natural honey exhibited potent amoebistatic and amoebicidal effects, in a concentration-dependent manner. Honey-treated Acanthamoeba castellanii showed loss of acanthopodia, following which amoebae detached, rounded up, reduced in size,decreased in cytoplasmic mass and they were observed floating in the culture ***, honey-treated amoebae did not revive when inoculated in fresh growth medium, however, glycerol-treated amoebae exhibited viable trophozoite and active growth. In contrast, marketed honey samples varied in their efficacy against Acanthamoeba castellanii. The proportion of flavonoid, as determined by quercetin measurements and the proportion of phenolic, as determined by gallic acid measurements was higher in natural honey compared with marketed honey. Similarly, the antioxidant activity, as determined by 2,2-diphenyl-1-picrylhydrazyl scavenging activity was higher in natural honey vs. marketed ***: This study shows that natural honey has antiacanthamoebic properties and possesses higher flavonoid, phenolic and antioxidant properties compared with the marketed honey. These findings are of concern to the public, health officials, and to the manufacturers regarding production of honey for medical applications.

关键词： Honey Acanthamoeba Amoebicidal Amoebistatic

A Study of Suspended Particulate Matter in Lahore (Pakistan)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 1990年第2期7卷 178-185页

作者： K.Hussain Ruby Riffat A.Shaukat M.Ashraf siddiqui Centre for Solid State Physics University of the PunjabNew campus Lahore 54590 (Pakistan)Department of Physics University of the PunjabNew Campus Lahore 54590 (Pakistan)Department of Physics University of the PunjabNew Campus Lahore 54590 (Pakistan)Institute of Geology University of the Punjab.New Campus Lahore 54590 (Pakistan).

The results obtained from an investigation of suspended particulate matter in the metropolitan city of Lahore (Pakistan) are reported and analysed in this paper. X-ray diffraction studies of the airborne matter collected from various urban and suburban sites show that non-clay minerals such as quartz, calcite and albite are contained in most of the samples in almost comparable amounts. Chemical analysis of some samples was carried out for complementing the x-ray diffraction data. The amount of quartz in the samples of dusty areas was found to be an order of magnitude more than in the samples of relatively cleaner areas. As the dust particles of these compounds are poor substrate for promoting nucleation of ice in the atmospheric clouds, they are liable to stay steadily in the atmosphere as pollutants.A comparison of the results of the airborne particulates and the soil samples collected from various sites show that the sources of quartz, calcite and albite in the airborne matter are both local and remote.

关键词： A Study of Suspended Particulate Matter in Lahore Pakistan

Indirect determination of serum creatinine reference intervals in a Pakistani pediatric population using big data analytics

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

World Journal of Clinical Pediatrics 2021年第4期10卷 72-78页

作者： Sibtain Ahmed Jakob Zierk Imran siddiqui Aysha Habib Khan Department of Pathology and Laboratory Medicine The Aga Khan UniversityKarachi 74800SindhPakistan Department of Pediatrics and Adolescent Medicine University Hospital ErlangenErlangen 91054Germany

BACKGROUND The indirect methods of reference intervals(RI)establishment based on data mining are utilized to overcome the ethical,practical challenges and the cost associated with the conventional direct *** To generate RIs for serum creatinine in children and adolescents using an indirect statistical *** Data mining of the laboratory information system was performed for serum creatinine analyzed from birth to 17 years for both *** timeline was set at six years from January 2013 to December *** Excel 2010 and an indirect algorithm developed by the German Society of Clinical Chemistry and Laboratory Medicine’s Working Group on Guide Limits were used for the data *** Data were extracted from 96104 samples and after excluding multiple samples for the same individual,we calculated RIs for 21920 males and 14846 females,with stratification into six discrete age *** Serum creatinine dynamics varied significantly across gender and age groups.

关键词： Creatinine Pediatric Reference intervals Indirect Data mining Pakistan

PULSAR DRIFT AND ROTATIONAL COLLAPSE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1987年第4期4卷 177-180页

作者： Asghar Qadir M.Rafique A.W.siddiqui Mathematics Department Quaid-i-Azam UniversityIslamabadPakistan Pakistan Military Academy KakulPakistan

The relativistic explanation of,pulsar drift is based on cm extremely sirnplistia *** collapsing star is treated as composed of a *** of particles falling radially znuards.A calculatzon incorporating a finite angular momentum is found to give reasonable drift velocities provided the inztzal pulsar frequency zs sufficiently *** values required are not unreasonable.

关键词： pulsar momentum explanation

Quality assessment and dissolution profile comparison studies on 250-mg mefenamic acid tablets available in local market of Karachi

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 2015年第10期24卷 673-677页

作者： Farya Zafar Huma Ali Shabana Naz Shah Safila Naveed Shehla siddiqui Faculty of Pharmacy Ziauddin University Martin Dow Pharmaceutical Pakistan Limited Jinnah University for Woman Karachi

In the present study, we aimed to determine the quality of different brands(Test1–Test6) of mefenamic acid, which are commercially available in local market of Karachi, Pakistan. Various quality evaluation tests, including weight variation, hardness, thickness, friability, disintegration, assay and drug release, were carried out. Results were found to be in acceptable limits. Moreover, release profiles were compared using different dissolution media, such as phosphate buffer pH 6.8, 7.4 and biorelevant media(FaSSGF, FaSSIF, FeSSIF and SCoF). Release profiles at pH 6.8 and 7.4 were evaluated by one--way ANOVA, model-independent and model--dependent methods. Results of ANOVA showed that no significant difference was found among tester and reference brands(Test1–Test6). Similarly, all the brands were found to be best fitted with Weibull model.

关键词： Mefenamic acid One-way ANOVA Model-independent Model--dependent method Biorelevant media

Subtalar dislocations:Mechanisms,clinical presentation and methods of reduction

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

World Journal of Orthopedics 2023年第6期14卷 379-386页

作者： Manikandar Srinivas Cheruvu Sanjay Narayana Murthy Raheel Shakoor siddiqui Department of Trauma and Orthopaedics Royal Stoke University Hospital NHS TrustStoke-On-Trent ST46QGUnited Kingdom Department of Orthopaedics Birmingham Heartlands HospitalBirmingham Birmingham Heartlands HospitalUnited Kingdom

Subtalar joint is a complex joint in hindfoot formed by the talus superiorly and the calcaneus and navicular *** dislocations are high-mechanism injuries,which are caused by simultaneous dislocation of both talonavicular and talocalcaneal joints,without major fracture of the *** are usually classified as medial(most common),lateral,anterior and posterior dislocations,based on the position of foot in relation to talus and the indirect forces that have been applied to cause this significant *** are usually diagnosed by X rays,but computed tomography and magnetic resonance imaging can be used to identify associated intra-articular fractures and peri-talar soft tissue injuries *** being closed injuries,can be managed in ED by closed reduction and cast immobilisation,but if they are open,have poor *** that ensue open dislocations are post-traumatic arthritis,instability and avascular necrosis.

关键词： Joint Subtalar Joint dislocations Flatfoot Clubfoot Talus

Pyogenic liver abscess caused by Fusobacterium in a 21-year-old immunocompetent male

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 Gastroenterology 2015年第12期21卷 3731-3735页

作者： zohair Ahmed Saurabh K Bansal Sonu Dhillon Department of Internal Medicine University of Illinois Peoria Campus OSF Saint Francis Medical Center Department of Gastroenterology and Hepatology University of Illinois Peoria Campus OSF Saint Francis Medical Center

A 21-year-old male with no significant past medical history, presented with right upper quadrant(RUQ) abdominal pain along with fevers and chills. Lab work revealed leukocytosis, anemia, and slightly elevated alkaline phosphatase. Viral serology for hepatitis B virus, hepatitis C virus, and human immunodeficiency virus were negative and he was *** tomography imaging revealed hepatic abscesses, the largest measuring 9.5 cm. Empiric antibiotics were started and percutaneous drains were placed in the abscesses. Anaerobic cultures from the abscesses grew Fusobacterium nucleatum. This is a gram negative anaerobic bacteria; a normal flora of the oral cavity. Fusobacterium is most commonly seen in Lemiere's disease, which is translocation of oral bacteria to the internal jugular vein causing a thrombophlebitis and subsequent spread of abscesses. Our patient did not have Lemiere's, and is the first case described of fusobacterium pyogenic liver abscess in a young immunocompetent male with good oral hygiene. This case was complicated by sepsis, empyema, and subsequent abscesses located outside the liver. These abscesses' have the propensity to flare abruptly and can be fatal. This case not only illustrates fusobacterium as a rare entity for pyogenic liver abscess, but also the need for urgent diagnosis and treatment. It is incumbent on physicians to diagnose and drain any suspicious hepatic lesions. While uncommon, such infections may develop without any overt source and can progress rapidly. Prompt drainage with antibiotic therapy remains the cornerstone of therapy.

关键词： Hepatic abscess Pyogenic Fusobacterium Liver Immun

Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters,Pakistan Northern Arabian Sea

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2013年第2期31卷 267-281页

作者： Sonia MUNIR Zaib-un-nisa BURHAN Tahira NAZ P.J.A.siddiqui Steve L.MORTON Centre of Excellence in Marine Biology University of Karachi-75270Pakistan National Oceanic and Atmospheric Administrations 219 Fort Johnson RoadCharleston SC29412USA

Morphotaxonomy and seasonal abundance of dinoflagellates of the genera Prorocentrum and Mesoporos （Prorocentrales） were studied from nutrient-rich waters, Karachi Harbor and the mouth of the Manora Channel, Pakistan during May 2002-July 2003. Using both light and scanning electron microscopy, 13 species of Prorocentrales were identified according to cell shape, size, ornamentation of thecal plates, and architecture of apical platelets, apical pore area, marginal pores, and intercalary bands. P. sigmoides, P. arcuatum, P. scutellum, P. donghaiense, P. balticum, P. minimum, P. emarginatum, P. lima, P. faustiae, and Mesoporos perforatus constitute new records for sindh coast of Pakistan. The most abundant species were P. minimum/P, balticum （4.5x103 cells/L）, P. micans （1.1~103 cells/L）, P. gracile/P, sigmoides （2.5 x 102 cells/L） and P. donghaiense （6.6 x 103 cells/L） at temperatures of 29-31 ~C and salinities of 35-40. Maximum abundance was observed in winter and lower abundance in summer. There was no significant change in the distribution of species between stations except for the benthic species which occurred close to Karachi Harbor waters. Significant positive correlations were observed between Prorocentrum spp. and temperature （R2=0.27） and negative correlations with salinity （R2=-0.32） except for P. minimum and P. emarginatum which has negative correlation with temperature （R2=-0.24） and positive with salinity （R2=0.08, 0.19）. The finding of potential okadaic-acid producing species of benthic Prorocentrum call for monitoring for possible human health problems in this region.

关键词： ecology morphology planktonic/benthic Prorocentrales harmful algae scanning electronaaicroscopy northern Arabian Sea