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Flow-injection Determination of Cysteine,N-Acetyl Cysteine and Glutathione in Pharmaceuticals via Potassium Ferricyanide-Fe(Ⅲ) Spectrophotometric System

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Chemical Research in Chinese Universities 2010年第6期26卷 893-898页

作者： waseem Amir YAQOOB Mohammad NABI Abdul Department of Chemistry COMSATS Institute of Information Technology Department of Chemistry University of Balochistan

A simple flow injection spectrophotometric method is reported for the determination of cysteine,N-acetyl cysteine and glutathione based on the reduction of Fe（Ⅲ）/ferricyanide,the in situ reduced ions are reacted with unreduced portion of ferricyanide/Fe（Ⅲ） to form soluble Prussian blue,which is monitored at 735 *** calibration graphs are linear in the concentration ranges of（1―100）×10-6 mol/L for cysteine and N-acetyl cysteine,and（1―50）×10-6 mol/L for *** relative standard deviations of 1.8%,2.5% and 1.9% were found for eleven replicate analyses of 5×10-6 mol/L cysteine,N-acetyl cysteine and *** limits of detection（3σ blank） at 5×10-7 mol/L for cysteine,and 3×10-7 mol/L for N-acetyl cysteine and glutathione were *** proposed method allowed 60 injections/*** effects of common substances present in pharmaceuticals and human physiological fluids were *** method was applied to determining cysteine in pharmaceutical formulations with the recoveries in a range of 97% to 106% and the results obtained are agreed well with labeled values.

关键词： Flow injection Spectrophotometry Cysteine Prussian blue Fe(Ⅲ) Ferricyanide Pharmaceutical

Privacy and security federated reference architecture for Internet of Things

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Frontiers of Information Technology & Electronic Engineering 2023年第4期24卷 481-508页

作者： Musab KAMAL Imran RASHID waseem IQBAL Muhammad Haroon SIDDIQUI Sohaib khan Ijaz AHMAD Department of Information Security National University of Sciences and TechnologyIslamabad 44000Pakistan Faculty of Information Technology Majan University CollegeMuscat 112Oman

Physical objects are getting connected to the Internet at an exceptional rate,making the idea of the Internet of Things(IoT)a *** IoT ecosystem is evident everywhere in the form of smart homes,health care systems,wearables,connected vehicles,and *** has given rise to risks associated with the privacy and security of *** issues and cyber attacks on IoT devices may potentially hinder the growth of IoT products due to deficiencies in the *** counter these issues,we need to implement privacy and security right from the building blocks of *** IoT architecture has evolved over the years,improving the stack of architecture with new solutions such as scalability,management,interoperability,and *** emphasizes the need to standardize and organize the IoT reference architecture in federation with privacy and security *** this study,we examine and analyze 12 existing IoT reference architectures to identify their shortcomings on the basis of the requirements addressed in the *** propose an architecture,the privacy-federated IoT security reference architecture(PF-IoT-SRA),which interprets all the involved privacy metrics and counters major threats and attacks in the IoT communication *** is a step toward the standardization of the domain *** effectively validate our proposed reference architecture using the architecture trade-off analysis method(ATAM),an industry-recognized scenario-based approach.

关键词： Architecturally significant requirement(ASR) Architecture trade-off analysis method(ATAM) Internet architecture board Internet of Things(IoT) Privacy enhancing technologies Privacy validation chain

Gastroparesis: Current diagnostic challenges and management considerations

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World Journal of Gastroenterology 2009年第1期15卷 25-37页

作者： Shamaila waseem Baharak Moshiree Peter V Draganov Department of Pediatric Gastroenterology Hepatology and Nutrition University of FloridaGainesville Florida 32610 United States Department of Gastroenterology Hepatology and Nutrition University of FloridaGainesville Florida 32610 United States

Gastroparesis refers to abnormal gastric motility characterized by delayed gastric emptying in the absence of mechanical obstruction. The most common etiologies include diabetes, post-surgical and idiopathic. The most common symptoms are nausea, vomiting and epigastric pain. Gastroparesis is estimated to affect 4% of the population and symptomatology may range from little effect on daily activity to severe disability and frequent hospitalizations. The gold standard of diagnosis is solid meal gastric scintigraphy. Treatment is multimodal and includes dietary modification, prokinetic and anti-emetic medications, and surgical interventions. New advances in drug therapy, and gastric electrical stimulation techniques have been introduced and might provide new hope to patients with refractory gastroparesis. In this comprehensive review, we discuss gastroparesis with emphasis on the latest developments; from the perspective of the practicing clinician.

关键词： Gastroparesis, Nausea Vomiting Prokinetic Therapy

Wormhole solutions and energy conditions in f(R,G)gravity

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Communications in Theoretical Physics 2021年第11期73卷 131-141页

作者： M Farasat Shamir G Mustafa Saad waseem Mushtaq Ahmad National University of Computer and Emerging Sciences Lahore CampusPakistan Department of Mathematics Shanghai UniversityShanghai200444China National University of Computer and Emerging Sciences Chiniot-Faisalabad CampusPakistan

In this manuscript,the traversable wormhole solutions have been explored in modified f(R,G)gravity by taking into consideration the model f(R,G)=R+rG2,where R is the Ricci curvature scalar and G is the Gauss–Bonnet *** acceptable form of the redshift function has been incorporated which is a non-constant in nature along with the implementation of those already defined in literature,the two shape functions namely b(r)=r/exp(r-r0)and b(r)=r0log(r+1)/log(r0+1).It is shown by studying the energy condition and through the graphical analysis that the null energy bounds for the effective energy-momentum tensor are generally violated for the presence of the ordinary matter in modified f(R,G)*** conditions associated with the matter content threading the wormhole geometries are evaluated and in general are found to favor the null energy conditions in the vicinity of the wormhole throat,the existence of the nonexotic wormhole geometries threaded by the matter has been confirmed under this gravity.

关键词： f(R,G)gravity energy conditions wormholes shape function

Influence of Various Row Spacing on the Yield and Yield Components of Raya Anmol and Faisal Canola under Coastal Climatic Conditions of Lasbela

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American Journal of Plant Sciences 2014年第15期5卷 2230-2236页

作者： Muhammad waseem Dost Mohammad Baloch Imran khan Department of Agronomy University of Agriculture Faisalabad Pakistan Faculty of Agriculture Lasbela University of Agriculture Water and Marine Sciences Uthal Pakistan

During 2013-2014 a field experiment was conducted at experimental area of Faculty of Agriculture under Lasbela University of Agriculture, Water and Marine Science, Uthal, Lasbela to evaluate the influence of various row spacing on the yield and yield components of Raya Anmol and Faisal Canola under coastal climatic conditions of Lasbela. Randomized complete block design (RCBD) with factorial arrangement having 3 replications was used. Experiment comprises two canola varieties, C1 = Raya Anmol, C2 = Faisal Canola at 3 row spacing distances RS1 = 30 cm, RS2 = 45 cm and RS3 = 60 cm respectively. Result showed that yield and yield contributing traits are significant. It was concluded that seed yield of C1 (Faisal Canola) was better as compared to that of Raya Anmol. Row spacing (RS3 = 60 cm) yielded more crop canopy and the highest number of pod per plant, pod length and seed yield under agro climatic condition of Lasbela as compared to other densely arranged row spacing.

关键词： Canola Cultivar Row Spacing Coastal Environment

The role of GRP81 lactate receptor in synaptic transmission regulation: does it enhance endocytosis?

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Neural Regeneration Research 2022年第12期17卷 2657-2658页

作者： Sergei V.Fedorovich Tatsiana V.waseem Department of Biochemistry Belarusian State UniversityMinskBelarus Independent researcher MinskBelarus

The brain is an expensive tissue in terms of energy *** composes about 2%of body mass and consumes about 20%of all oxygen and calories(Fedorovich and waseem,2018).For neurons,glucose is the primary energy substrate,although they are able to use ketone bodies,pyruvate and lactate(Fedorovich and waseem,2018).All these compounds can be metabolized directly in the Krebs cycle,bypassing ***,they are often termed non-glycolytic energy *** of all potential non-glycolytic substrates,lactate is the most physiological(Magistretti and Allaman,2018).Ketone bodies could reach concentrations in blood plasma and cerebrospinal fluid which are sufficient to meet metabolic demands of neurons only under specific non-physiological conditions,e.g.,ketogenic diet and starvation,or during *** contrast,the normal plasma level of lactate is about 1.5 mM and can reach 20 mM during intensive physical exercise.

关键词： ketone glycol cycle

Recent advances in acid-resistant zeolite T membranes for dehydration of organics

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Chinese Journal of Chemical Engineering 2019年第6期27卷 1449-1457页

作者： Yiwei Luo waseem Raza Jianhua Yang Liangqing Li Ying Lu State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024China Collaborative Innovation Center of Fine Chemical and Materials Technology School of Chemistry and Chemical EngineeringHuangshan UniversityHuangshan 245041China

Zeolite membranes offer outstanding potentials in separation of many molecular mixtures due to their molecular sieving selectivity and the high thermal and mechanical stability that allow them to operate at harsh *** of durable and high separation performance membranes with lower fabrication and operation cost are highly demanded for industrial applications. Zeolite T membrane possesses good acid-resistance with excellent hydrophilic properties as compared to NaA zeolite membrane and can be extended to industrial organic dehydrations under an acidic environment. In the present review the research advances in development of zeolite T membranes for the dehydration of organic mixtures in acidic conditions are summarized. Especially the low temperature synthesis, and epitaxial growth of the zeolite membrane with high performance are well addressed, besides emphasis is particularly placed on ensemble synthesis of hollow fiber zeolite T membrane module and its future prospects for industrial separations.

关键词： Dehydration of organics Epitaxial growth Zeolite T membrane Membrane pervaporation

Citrus-based essential oils could be used for dengue vector mosquitoes control

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Asian Pacific Journal of Tropical Medicine 2013年第6期6卷 504-504页

作者： Hafiz Azhar Ali khan waseem Akram Institute of Agricultural Sciences University of the PunjabLahorePakistan Department of Agri EntomologyUniversity of AgricultureFaisalabadPakistan

Dear Editor The mosquitoes Aedes aegypli(I,) and Aedes albopictus (Skuse)(Diptera:Culicidae) are important vectors of dengue fever in tropical and subtropical parts of the world. Chemical control has been considered as an effective tool for their management in different areas of the ***, injudicious use of the chemicals result in environmental pollution,ill effects to humans and other animals,and the development of insecticide resistance,which ultimately limits the efficacy of many insecticides!’].Essential oils can be used for mosquito control with no harmful effects to the ecosystem and non-target *** oils from different plants have been found very

关键词： Citrus-based essential oils could be used for dengue vector mosquitoes control

Characteristics of major and trace elements in surface sediments of the Makran Accretionary Prism, Pakistan and their implications for natural gas hydrates

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China Geology 2021年第2期4卷 299-310页

作者： Jian-ming Gong Jing Liao Yu-xi Zhang Jie Liang Jian-wen Chen Nuzhat khan Syed waseem Haider Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China Shandong University of Science and Technology Qingdao 266071China National Institute of Oceanography ST-47Block-1CliftonKarachi-75600Pakistan

To accurately identify the natural gas hydrates(NGH)in the sea area of the Makran Accretionary Prism,Pakistan,this paper presents the testing and analysis of major and trace elements in sediment samples taken from two stations(S2 and S3)in the area by the China Geological *** shown by testing results,all major elements are slightly different in content between the two stations except SiO2 and *** also applies to the trace elements that include Sr and Ba primarily and Cr,Ni and Zn *** can be concluded in this study that the tectonic setting of the Makran Accretionary Prism is dominated by oceanic island arc and that provenance of the Makran Accretionary Prism is dominated by felsic igneous provenance,which is at the initial weathering stage and mainly consists of *** terrigenous detritus,there are sediments possibly originating from Makran-Bela Ophiolite from the northwestern part and Murray Ridge igneous rocks from the southeastern *** V/Cr,Ni/Co,and V/(V+Ni)ratios indicate that sediments of the two stations are in an oxidation-suboxidation ***,the authors infer that the sedimentary environment of the sediments 3.0 m below the seafloor tends to be gradually transformed into a reduction environment by comparison with the Qiongdongnan Basin in the South China Sea where NGH has been *** sediments in the Makran Accretionary Prism are rich in organic matter,with total organic carbon(TOC)content greater than 1%.According to comprehensive research,the organic matter in the sediments mainly originates from marine algae and has high TOC content,which is favorable for the formation of NGH.

关键词： Characteristics of major and trace elements Natural gas hydrates Marine algae Total organic carbon Makran Accretionary Prism NGH exploration trial engineering Arabian Sea Pakistan