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Analyzing the effect of steam quality and injection temperature on the performance of steam flooding

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能源地球科学(英文) 2021年第1期2卷 83-86页

作者： Farzain Ud din Kirmani Arshad Raza Raoof Gholami muhammad Zeshan Haidar Chaudary Sarosh Fareed Department of Petroleum&Gas Engineering University of Engineering&Technology(UET)LahorePakistan Department of Energy Resources University of StavangerNorway

The heavy oil reservoirs are currently mainly targeted by thermal enhanced oil recovery technologies,particularly,steam *** flooding is carried out by introducing heat into the reservoir to unlock the recovery of heavy oil by reducing oil *** investigations were carried out to improve oil recovery by steam *** recently,high steam flooding is reported as an effective approach to improve recovery in high pressure heavy oil *** oil recovery from steam flooding is sub-stantially affected by the steam quality and injection *** this study,an attempt was made to look into the integration of parameters,*** quality and injection temperature upon steam flooding on oil recovery by using a simulation approach via *** results obtained indicated that high temperature along with the moderate value of steam quality gives the best result regarding oil recovery for steam flooding in an economical way.

关键词： Steam flooding Recovery Steam quality Temperature Oil reservoir

Origin of Quartz Cement in the Paleogene Sandstone Reservoir of Shahejie Formation,Bohai Bay Basin,China

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 248-260页

作者： muhammad KASHIF CAO Yingchang Nizam Ud din Uzair SIDDIQUE XI Kelai Faisal REHMAN Noor AHMED GU Xihao Mohammad Saleh GAGHMAN Department of Earth sciences University of SargodhaSargodha 40100Pakistan School of Geosciences China University of PetroleumQingdaoShandong 266580China College of Earth sciences and Engineering Hohai UniversityNanjing 210098China Institute of Marine Geology and Resources Ocean CollegeZhejiang UniversityZhoushanZhejiang 316021China Department of Earth sciences Quaid-I-Azam UniversityIslamabad 45320Pakistan

The precipitation of authigenic quartz plays a significant role to reduce the reservoir characteristics and enhance the stiffness of the *** Es_(1) sandstone of Shahejie Formation is acting as a significant hydrocarbon producing rock in the Nanpu *** methods like thin section petrography,cathodoluminescence(CL),scanning electron microscope(SEM,with EDS),and electron microprobe analysis has been used to reveal the origin of quartz cement as well as to evaluate the effect of quartz cement on reservoir *** studied sandstone is classified as immature to mature feldspathic litharenite and lithic arkose and consists of quartz,feldspar,rock fragments and *** studies and SEM analysis shows that the authigenic quartz is acting a significant cement that reduces the reservoir *** clay minerals(kaolinite and mixed layer illite to smectite)are dominant in the Es_(1) sandstone,that can reduce the reservoir ***,CL and thin section analysis reveal that there are two stages of quartz cement in the studied samples;that are pore filling authigenic cement and quartz overgrowth *** inclusion homogenization temperatures shows that stages of quartz cement were developed with continuous process from 70℃ to 130℃.Quartz cements were generally originated from I/S reaction,feldspar dissolution,conversion of rock fragments and pressure *** dissolution(K-feldspar)and kaolinite to illite reaction is an insignificant silica source for the silica cement which is internally precipitated in a close system with diffusion transporting ***,quartz cement significantly enhance the rock strengthen and brittleness effectively as well as it reduce the overall reservoir quality.

关键词： origin authigenic quartz silica sources diffusion Shahejie Formation

Novel mutations in PDE6A and CDHR1 cause retinitis pigmentosa in Pakistani families

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International Journal of Ophthalmology(English edition) 2021年第12期14卷 1843-1851页

作者： muhammad Dawood Siying Lin Taj Ud din Irfan Ullah Shah Niamat Khan Abid Jan muhammad Marwan Komal Sultan Maha Nowshid Raheel Tahir Asif Naveed Ahmed muhammad Yasin Emma LBaple Andrew HCrosby Shamim Saleha Department of Biotechnology and Genetic Engineering Kohat University of Science and Technology(KUST)Kohat 26000Khyber PakhtunkhwaPakistan Medical Research RILD Wellcome Wolfson Centre(Level 4)Royal Devon and Exeter NHS Foundation TrustExeterDevon EX25DWUK Department of Ophthalmology KMU Institute of Medical Sciences(KIMS)Kohat 26000Khyber PakhtunkhwaPakistan

AIM:To investigate the genetic basis of autosomal recessive retinitis pigmentosa(arRP)in two consanguineous/endogamous Pakistani ***:Whole exome sequencing(WES)was performed on genomic DNA samples of patients with arRP to identify disease causing *** sequencing was performed to confirm familial segregation of identified mutations,and potential pathogenicity was determined by predictions of the mutations’***:A novel homozygous frameshift mutation[NM_000440.2:c.1054delG,p.(Gln352Argfs*4);Chr5:g.149286886del(GRCh37)]in the PDE6A gene in an endogamous family and a novel homozygous splice site mutation[NM_033100.3:c.1168-1G>A,Chr10:g.85968484G>A(GRCh37)]in the CDHR1 gene in a consanguineous family were *** PDE6A variant p.(Gln352Argfs*4)was predicted to be deleterious or pathogenic,whilst the CDHR1 variant c.1168-1G>A was predicted to result in potential alteration of ***:This study expands the spectrum of genetic variants for arRP in Pakistani families.

关键词： autosomal recessive retinitis pigmentosa PDE6A CDHR1 variants Pakistani families

On Irresolute Topological Vector Spaces

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Advances in Pure Mathematics 2016年第2期6卷 105-112页

作者： Moizud din Khan muhammad Asad Iqbal Department of Mathematics COMSATS Institute of Information Technology Islamabad Pakistan

In this paper, our focus is to investigate the notion of irresolute topological vector spaces. Irresolute topological vector spaces are defined by using semi open sets and irresolute mappings. The notion of irresolute topological vector spaces is analog to the notion of topological vector spaces, but mathematically it behaves differently. An example is given to show that an irresolute topological vector space is not a topological vector space. It is proved that: 1) Irresolute topological vector spaces possess open hereditary property;2) A homomorphism of irresolute topological vector spaces is irresolute if and only if it is irresolute at identity element;3) In irresolute topological vector spaces, the scalar multiple of semi compact set is semi compact;4) In irresolute topological vector spaces, every semi open set is translationally invariant.

关键词： Topological Vector Space Irresolute Topological Vector Space Irresolue Mapping Semi Open Set

Physicochemical,rheological and antioxidant profiling of yogurt prepared from non-enzymatically and enzymatically hydrolyzed potato powder under refrigeration

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Food Science and Human Wellness 2023年第1期12卷 69-78页

作者： Ishtiaq Ahmad Zhouyi Xiong Hanguo Xiong Rana muhammad Aadil Nauman Khalid Allah Bakash Jvaid Lakhoo Zia-ud-din Asad Nawaz Noman Walayat Rao Sanaullah Khan College of Food Science and Technology Huazhong Agricultural UniversityWuhan 430070China Fisheries Research Institute Wuhan Academy of Agricultural SciencesWuhan 430207China National Institute of Food Science and Technology University of AgricultureFaisalabad 38000Pakistan Schools of Food and Agricultural Sciences University of Management and TechnologyLahore 54000Pakistan College of Food Science and Technology Zhejiang University of TechnologyHangzhou 310014China

Evidences show that the storage period greatly affects the quality of *** this study,three types of yogurt:control yogurt(CY),non-hydrolyzed potato powder yogurt(PPY)and enzymatically hydrolyzed potato powder yogurt(EHPPY)were prepared at 42℃ for 5 h and stored for 28 days at 4℃.The yogurts were evaluated for quality characteristics at different storage *** differences in pH values,titratable acidities and viable counts were detected in all three types of yogurt during ***,compared to other yogurts,EHPPY exhibited desirable water holding capacity,throughout the storage *** from this,sensory properties and antioxidant activities(2-diphenyl-1-picryl-hydrazyl(DPPH)free radical scavenging activity and ferric reducing antioxidant power(FRAP))of EHPPY were also significantly improved during the storage ***,the storage(G’)and loss(G”)modulus of PPY,EHPPY were lower than CY at 4℃ while a hysteresis loop was shown by all yogurts at the temperature range of 4-50℃ indicating higher G’(elasticity)than G”(viscosity).Based on our findings,EHPP could be an important functional ingredient in improving the quality and storage stability of yogurt for its production at an industrial level.

关键词： Storage stability Potato powder Yogurt Rheology Microbiology Antioxidant activity

Identification of microRNAs in ecological model plant <i>Mimulus</i>

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Journal of Biophysical Chemistry 2011年第3期2卷 322-331页

作者： muhammad Younas Khan Barozai muhammad din Iftikhar Ahmed Baloch Department of Botany University of Baluchistan Sariab Road Quetta. Pakistan

MicroRNAs (miRNAs) are small, non-coding and regulatory RNAs about 20 to 24 nucleotides long. Their conserved nature among the various organisms makes them a good source of new miRNAs discovery by comparative genomics approach. This study resulted in 34 miRNAs belonging to 21 families in ecological model plant Mimulus. All the miRNA families (mir 156, 157, 159, 160, 164, 172, 319, 393, 395, 397, 399, 400, 403, 417, 419, 472, 782, 854, 858, 867 and 2112) are found for the first time in Mimulus. The MIR-399 is found as precursor miRNA cluster with 4 mature sequences. All 34 miRNA precursors form stable minimum free energy stem loop structure as their orthologues form and the mature miRNAs reside in the stem portion of the stem loop structure. Twenty eight are from Mimulus guttatus and six miRNAs belong to Mimulus lewisii. Their targets consist of dihy-droflavonol-4-reductase, cycloidea-like protein, DNA-directed RNA polymerase II, maturase (matR) and transcription factors like;squamosa-promoter binding, MYB, palmate-like pentafoliata 1.

关键词： Keywords: Comparative Genomics MicroRNAs Mimulus

Countrywide Survey for MERS-Coronavirus Antibodies in Dromedaries and Humans in Pakistan

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Virologica Sinica 2018年第5期33卷 410-417页

作者： Ali Zohaib muhammad Saqib muhammad Ammar Athar Jing Chen Awais-ur-Rahman Sial Saeed Khan Zeeshan Taj Halima Sadia Usman Tahir muhammad Haleem Tayyab muhammad Asif Qureshi muhammad Khalid Mansoor muhammad Ahsan Naeem Bing-Jie Hu Bilal Ahmed Khan Ikram din Ujjan Bei Li Wei Zhang Yun Luo Yan Zhu Cecilia Waruhiu Iahtasham Khan Xing-Lou Yang muhammad Sohail Sajid Victor Max Corman Bing Yan Zheng-Li Shi CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China University of Ctunese Academy of Sciences Beijing 100049China Faculty of Veterinary Medicine University of AgricultureFaisalabad 38040Pakistan Laboratory of Cancer Biomarkers and Liquid Biopsy College of PharmacyHenan UniversityHenan 475004China Department of Clinical Studies Faculty of Veterinary and Animal SciencesPMAS-Arid Agriculture UniversityRawalpindi 46000Pakistan Dow University of Health Science Pakistan Karachi 74200 Department of Microbiology Government College University FaisalabadFaisalabad 38000Pakistan Livestock and Dairy Development Department(L&DD) Lahore 54000Pakistan College of Veterinary and Animal Sciences The Islamia University of BahawalpurBahawalpur 63100Pakistan State Key Laboratory of Agricultural Mlcroblology Huazhong Agricultural UniversityWuhan 430070China Liaqat University of Medical and Health Science Pakistan Jamshoro 76090 Section of Epidemiology and Public Health Department of Chnical SciencesUniversity of Veterinary and Animal SciencesLahore subcampusJhang 35200Pakistan Institute of Virology Chadte-Universitatsmedizin BerlinCorporate member of Free UniversityHumboldt-University and Berlin Institute of HealthBerlin 10117Germany German Center for Infection Research(DZIF) Berlin 10117Germany

Middle East Respiratory Syndrome Coronavirus (MERS-CoV) is a zoonotic pathogen capable of causing severe respiratory disease in humans. Although dromedary camels are considered as a major reservoir host, the MERS-CoV infection dynamics in camels are not fully understood. Through surveillance in Pakistan, nasal (n = 776) and serum (n = 1050)samples were collected from camels between November 2015 and February 2018. Samples were collected from animal markets, free-roaming herds and abattoirs. An in-house ELISA was developed to detect IgG against MERS-CoV. A total of 794 camels were found seropositive for MERS-CoV. Prevalence increased with the age and the highest seroprevalence was recorded in camels aged [ 10 years (81.37%) followed by those aged 3.1–10 years (78.65%) and B 3 years (58.19%).Higher prevalence was observed in female (78.13%) as compared to male (70.70%). Of the camel nasal swabs, 22 were found to be positive by RT-qPCR though with high Ct values. Moreover, 2,409 human serum samples were also collected from four provinces of Pakistan during 2016–2017. Among the sampled population, 840 humans were camel *** we found a high rate of MERS-CoV antibody positive dromedaries (75.62%) in Pakistan, no neutralizing antibodies were detected in humans with and without contact to camels.

关键词： Middle East Respiratory Syndrome Coronavirus (MERS-CoV) Camel -Human Pakistan

Assessment of seismic hazard of roller compacted concrete dam site in Gilgit-Baltistan of northern Pakistan

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Earthquake Engineering and Engineering Vibration 2021年第3期20卷 621-630页

作者： Shahzada Khurram Perveiz Khalid Jahanzeb Qureshi Zia Ud din Institute of Geology University of the PunjabLahore 54590Pakistan Department of Space Science University of the PunjabLahore 54590Pakistan

The proposed site of the Diamer Bhasha Dam in northern Pakistan is situated in an active tectonic zone with intensive seismicity,which makes it necessary for seismic hazard analysis(SHA).Deterministic and probabilistic approaches have been used for SHA of the dam *** Main Mantle Thrust(MMT),Main Karakaram Thrust(MKT),Raikot-Sassi Fault(RKSF)and Kohistan Fault(KF)have been considered as major seismic sources,all of which can create maximum ground shaking with maximum potential earthquake(MPE).Deterministically estimated MPE for magnitudes of 7.8,7.7,7.6,and 7.1 can be produced from MMT,MKT,RKSF and KF,*** corresponding peak ground accelerations(PGA)of 0.07,0.11,0.13 and 0.05 g can also be generated from these earthquakes,*** deterministic analysis predicts a so-called floating earthquake as a MPE of magnitude=7.1 as close as 10 km away from the *** corresponding PGA was computed as 0.38 g for a maximum design earthquake at the project ***,the probabilistic analysis revealed that the PGA with 50%probability of exceedance in 100 years is 0.18 ***,this PGA value related to the operational basis earthquake(OBE)is suggested for the design of this project with shear wave velocity(V_(s30))equal to 760 m/s under dense soil and soft rock conditions.

关键词： seismic hazard analysis peak ground acceleration Gilgat-Biltastan Diamer Bhasha Dam

Insecticidal Potential of α-Pinene and β-Caryophyllene against Myzus persicae and Their Impacts on Gene Expression

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Phyton-International Journal of Experimental Botany 2023年第7期92卷 1943-1954页

作者： Talha Ali Chohan Tahir Ali Chohan muhammad Zahid Mumtaz muhammad Waqar Alam Salah ud din Iqra Naseer Ayesha Riaz Tayyeba Naseem Areeba Iftikhar Dur ENajaf Ali Mubashir Hassan Hayssam M.Ali Institute of Molecular Biology and Biotechnology(IMBB) The University of LahoreLahore54000Pakistan Institute of Pharmaceutical Sciences University of Veterinary and Animal SciencesLahore54000Pakistan Deparment of Plant Pathology University of OkaraOkara56300Pakistan Deparment of Bioinformatics University of OkaraOkara56300Pakistan Department of Soil Science The Islamia University of BahawalpurBahawalpur63100Pakistan Department of Zoology The Islamia University of BahawalpurBahawalpur(Bahawalnagar Campus)63100Pakistan The Steve and Cindy Rasmussen Institute for Genomic Medicine Nationwide Children’s HospitalColumbusOhio43205USA Department of Botany and Microbiology College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

Myzus persicae(***)is now considered a threat to agricultural crops due to economic *** synthetic insecticides applied every year against ***,are reported to be unsafe for environment,humans,and beneficial ***,several species of Myzus have been found to develop resistance due to over application of these ***,it is required to find some novel insecticide that would be safe for the environment as well as for *** the current study,two major pure constituentsα-pinene andβ-caryophyllene were evaluated for their insecticidal potential against *** using a fumigant toxicity ***,impact ofα-pinene andβ-caryophyllene on expression of five different genes,e.g.,HSP 60,FPPS I,OSD,TOL and ANT responsible for reproduction,dispersion,and growth of *** has also been *** perform fumigant toxicity assay,five different concentrations(3.5,4,4.5,5 and 6μL L−1)ofα-pinene andβ-caryophyllene were *** concentration(LC)was calculated,and gene expression studies were executed through qRT PCR at LC30 ofα-pinene andβ-*** constituents demonstrated excellent fumigant toxicity effects against *** at all five ***,α-pinene shows significantly better results(98%)as compared toβ-caryophyllene(80%)after 72 h at 6μL L−1 of *** highest upregulation in expression was demonstrated at LC30 dose ofα-pinene in five in three out of five genes understudy(TOL,ANT,and FPPS I).Conversely,two genes HSP 60 and OSD demonstrated downregulation at LC30 dose ofβ-***,our results highlighted the promising insecticidal potential of both compoundsα-pinene andβ-caryophylleneby interfering with the reproduction and development related processes in ***,allowing us to recommend the phytoconstituents under investigation as an ecofriendly alternative to synthetic insecticides.

关键词： Fumigation M.persicae gene expression real time PCR α-pinene β-caryophyllene