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A New Discovery of Mineralization as Subseafloor Hydrothermal Replacement in the Duddar Super-Large SEDEX Lead-Zinc Deposit in Pakistan

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Journal of Earth Science 2024年第3期35卷 1075-1078页

作者： Huishan Zhang Yucai Song Jianing Sun Jun Hong yasir Shaheen khalil Yanguang Li Haidi Zhang Zhihua Wang MNR Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits Xi’an Center of Geological SurveyChina Geological SurveyXi’an 710054China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Chengdu Center of Geological Survey China Geological SurveyChengdu 610081China China Huaye Group Co. LtdBeijing 100037China Geological Survey of Pakistan Islamabad 44000Pakistan

0 INTRODUCTION Sedimentary exhalative(SEDEX)lead-zinc deposit was traditionally considered as a result of submarine hydrothermal exhalation,including exhalative plume and brine pool models(Izanloo et al.,2022;Spinks et al.,2021;Maghfouri et al.,2020;Sangster,2020,2018;Huang et al.,2019;Rajabi et al.,2015;Goodfellow and Lydon,2007;Large et al.,2005,2001;Peng et al.,2000;Goodfellow et al.,1993;Figures 1a,1b).However,recognition of mineralization as subseafloor hydrothermal replacement in a few SEDEX deposits has challenged the traditional consideration(Magnall et al.,2023,2021,2020a,b;Hayward et al.,2021;Figure 1c).Researchers come to believe that subseafloor replacement rather than submarine exhalation is a dominant process for SEDEX mineralization,but this needs to be examined through more case studies.

关键词： submarine mineralization seafloor

巴基斯坦新特提斯构造–岩浆演化与重要金属成矿作用

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西北地质 2024年第3期57卷 154-176页

作者：洪俊张辉善吕鹏瑞 Tahseenullah Khan yasir Shaheen khalil 王志华张海迪自然资源部岩浆作用成矿与找矿重点实验室中国地质调查局西安地质调查中心陕西西安710119 巴基斯坦巴利亚大学地球科学与环境学院巴基斯坦伊斯兰堡44000 巴基斯坦地质调查局巴基斯坦伊斯兰堡44000 长安大学资源学院陕西西安710054

巴基斯坦在大地构造位置上处于印度、欧亚和阿拉伯三大板块的汇聚带,正同时发生着大陆碰撞和大洋俯冲作用,是研究地球系统深部圈层相互作用与成矿效应的绝佳天然实验室。但是,目前对于巴基斯坦构造演化与成矿作用的研究还不系统,对于巴... 详细信息

巴基斯坦在大地构造位置上处于印度、欧亚和阿拉伯三大板块的汇聚带,正同时发生着大陆碰撞和大洋俯冲作用,是研究地球系统深部圈层相互作用与成矿效应的绝佳天然实验室。但是,目前对于巴基斯坦构造演化与成矿作用的研究还不系统,对于巴基斯坦的大型–超大型矿床形成的背景和机制仍不清楚。笔者针对巴基斯坦不同类型的优势矿种开展了深入解剖和对比研究,系统梳理最新研究进展,围绕巴基斯坦新特提斯构造–岩浆演化与成矿作用响应的关键科学问题,分析铜矿、铬铁矿、铅锌矿以及碳酸岩有关的稀土矿床等重要金属成矿类型形成的构造环境以及与区域重大地质事件的耦合关系,总结巴基斯坦区域成矿规律,为资源潜力分析和境内外找矿勘查提供依据。

关键词：新特提斯岩浆作用铬铁矿斑岩铜矿碳酸岩巴基斯坦

An energetic nano-fiber composite based on polystyrene and 1,3,5-trinitro-1,3,5-triazinane fabricated via electrospinning technique

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Defence Technology(防务技术) 2023年第9期27卷 1-8页

作者： Mahmoud Abdelhafiz Ahmed K.hussein Waleed F.khalil Ahmed Elbeih Military TechnicalCollege(MTC) KobryElkobbahCairoEgypt Safety FuelCycleDepartment NRSRCEgyptianAtomicEnergyAuthority(EAEA)CairoEgypt

Electrospinning is a simple technique used to fabricate polymeric nano-fibrous *** nano-fibers have found a wide range of valuable applications in the biomedical ***,it has not been utilized with solid high explosives ***,the electrospinning technique has been used to fabricate polystyrene(PS)/1,3,5-trinitro-1,3,5-triazinane(RDX)composite *** governed electrospinning parameters,voltage,distance from the collector,flow rate,mandrel rotating speed,time,and solution concentration,that greatly affect the morphology of the obtained nanofibers were *** fabricated PS/RDX nano-fibers were characterized using scanning electron microscopy(SEM),X-ray diffractometer(XRD),and Fourier Transform Infrared(FTIR)*** impact and friction sensitivities of PS/RDX were also *** thermal behavior of the prepared composite and the pure materials were studied by the thermal gravimetric analysis technique(TGA).SEM results proved the fabrication of PS/RDX fibers in the nano-size via *** spectroscopy confirmed the existence of the characteristic functional groups of both PS and RDX in the composite *** sharp peaks showed the conversion of amorphous PS into crystalline shape via electrospinning and also confirmed the formation of PS/RDX *** PS fibers absorbed the heat and increased the onset decomposition of the pure RDX from 181.5 to 200.7℃in the case of PS/RDX ***,PS/RDX nano-fibers showed the relatively low impact and friction sensitivities of 100 J and 360 N *** results could introduce PS/RDX nanofibrous composite in the field of explosives detection with high levels of safety.

关键词： Electrospinning Nano-fibers 1,3,5-Trinitro-1,3,5-triazinane(RDX) Polystyrene(PS) Sensitivity

Certificateless algorithm for Body Sensor Network and Remote Medical Server Units Authentication over Public Wireless Channels

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Journal of Computer Science Research 2022年第3期4卷 1-11页

作者： Bahaa hussein Taher Muhammad yasir Abraham Isiaho Judith N.Nyakanga Huazhong University of Science&Technology WuhanChina China University of Petroleum QingdaoChina Kaimosi Friends University College KaimosiKenya Kenyatta National Hospital NairobiKenya

Wireless sensor networks process and exchange mission-critical data relating to patients’health ***,any leakages of the sensed data can have serious consequences which can endanger the lives of *** such,there is need for strong security and privacy protection of the data in storage as well as the data in *** the recent past,researchers have developed numerous security protocols based on digital signatures,advanced encryption standard,digital certificates and elliptic curve cryptography among other ***,previous studies have shown the existence of many security and privacy gaps that can be exploited by attackers to cause some harm in these *** addition,some techniques such as digital certificates have high storage and computation complexities occasioned by certificate and public key management *** this paper,a certificateless algorithm is developed for authenticating the body sensors and remote medical server *** analysis has shown that it offers data privacy,secure session key agreement,untraceability and *** can also withstand typical wireless sensor networks attacks such as impersonation,packet replay and *** the other hand,it is demonstrated to have the least execution time and bandwidth requirements.

关键词： Authentication Body sensors Security Privacy WBAN

巴基斯坦白沙瓦地区碳酸岩形成时代与构造背景

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巴基斯坦白沙瓦地区碳酸岩形成时代与构造背景

巴基斯坦山达克矿区ASTER遥感数据蚀变信息提取及找矿预测

第十四届中国包头·稀土产业论坛、中国稀土学会2022学术年会

作者：洪俊 yasir Shaheen khalil Mehboob Ur Rashid

白沙瓦平原碱性火成岩省位于巴基斯坦西北部KPK省,以广泛出露的碱性花岗岩、正长岩、霞石正长岩和碳酸岩为特征,其北侧以主地幔逆冲断裂（MMT）为界,南侧则由主边界逆冲断裂（MBT）所分隔,构成约300 km宽的喜马拉雅逆冲褶皱带。通过对K... 详细信息

白沙瓦平原碱性火成岩省位于巴基斯坦西北部KPK省,以广泛出露的碱性花岗岩、正长岩、霞石正长岩和碳酸岩为特征,其北侧以主地幔逆冲断裂（MMT）为界,南侧则由主边界逆冲断裂（MBT）所分隔,构成约300 km宽的喜马拉雅逆冲褶皱带。通过对Koga和Dunkeldik碳酸岩开展锆石U-Pb年代学研究,并结合前人已经发表的年代学数据,将巴基斯坦北部的碳酸岩-碱性岩浆活动划分为早二叠世、渐新世-中新世。早期Koga碳酸岩的Sr-Nd-Pd同位素特征显示其有较低的Sr初始比值((Sr/Sr)i=0.70233～0.70382)和正的εNd（t）值（+3.10～+3.47）,表明其源区具有HIMU和EMI两种地幔端元混合的特征（图1）,与早二叠世冈瓦纳大陆北缘的裂解事件有关,其源区特征和岩石成因与东非裂谷碳酸岩相似,碳酸岩中稀土总量较低,属于无矿碳酸岩。晚期的Sillai Patti碳酸岩以富含磷灰石（高达15%）为特征,具有高Sr低Nd的同位素比值,和负的εNd（t）值（-2.2～-1.7）,起源于印度次大陆岩石圈地幔部分熔融,并受到地壳物质的混染,深部动力学机制可能是后碰撞构造体制下局部岩石圈的拆沉作用[2]。该岩体起源于受俯冲沉积物流体交代的岩石圈地幔部分熔融,源区有一定程度的REE预富集,但尚未形成工业规模的REE矿床,因为不发育伟晶岩阶段及后期热液阶段,缺乏大规模热液作用的进一步富集。

关键词：碳酸岩构造背景稀土成矿作用碱性火成岩省巴基斯坦

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地质论评 2022年第6期68卷 2381-2395页

作者：刘磊蒲小楠洪俊张辉善 yasir Shaheen khalil 长安大学地球科学与资源学院西安710054 自然资源部岩浆作用成矿与找矿重点实验室中国地质调查局西安地质调查中心西安710054 巴基斯坦地质调查局巴基斯坦白沙瓦25100

巴基斯坦查盖火山岩浆岩带属于特提斯成矿域的重要组成部分之一,是巴基斯坦境内最重要的斑岩型铜矿带,但目前其相关的遥感研究还较少,制约了对该成矿带的找矿潜力分析。笔者等以山达克矿床及其周边为研究区,对先进星载热辐射与反射辐射... 详细信息

巴基斯坦查盖火山岩浆岩带属于特提斯成矿域的重要组成部分之一,是巴基斯坦境内最重要的斑岩型铜矿带,但目前其相关的遥感研究还较少,制约了对该成矿带的找矿潜力分析。笔者等以山达克矿床及其周边为研究区,对先进星载热辐射与反射辐射计(Advanced Spaceborne Thermal Emission and Reflection Radiometer, ASTER)数据进行RBD (Relative absorption band depth)比值假彩色合成、主成分分析、光谱角制图等处理,获得蚀变遥感异常信息分布特征,通过对蚀变特征和主要控矿要素进行遥感研究,建立了山达克矿床遥感找矿模型并开展成矿预测,为该成矿带矿产勘查提供借鉴。根据建立的遥感找矿模型,圈定了找矿预测靶区10处。对矿区东矿体和矿区北部的2个靶区进行野外验证,证实了提取结果与实际地质事实吻合较好,对矿区岩石样品进行光谱实测,表明样品实测光谱曲线与标准矿物光谱曲线的吸收特征位置高度相似,证实了研究区绢云母化、青磐岩化等蚀变较强且分布较广。结果表明本次研究提取的矿化蚀变结果可信度较高,可为后续找矿勘查工作提供参考。

关键词：巴基斯坦山达克铜矿 ASTER 矿化蚀变遥感找矿模型

Amblyopia screening for first and second-grade children in Jordan

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International Journal of Ophthalmology(English edition) 2022年第2期15卷 352-356页

作者： khalil M.al-Salem Mohammad S.Saleem Ismat Ereifej Hamzeh M.alrawashdeh Rayed Falah hussein Obeidat Asma ali Abdlmohdi Raeda Zaki al-Momani Layal Mohammed Hammad Omar Ahmad al-Habahbeh Yaqeen M.Assassfeh Laith Ramzi Najib al-Qsous Ashraf Hatim Adeeb Nasraween Tariq A.al Maaitah Deya'-aldin Muneer Hasan Aqeel Ibtehal Eyadeh Awad alabdulrazzg Abdullah Mahmoud Mohammad Murad Amany Jehad Faleh al-Zurqan Enas Jamal Mohammad Jaradat Slsabela Emad Suliman aldhoon ala'a Majed Dmour Ahmad Talal Asassfeh Jeries Ayman Halaseh Abdel Aziz Ammar Daoud Waha Ayman alkasasbeh Kholoud GH.Matar Department of Ophthalmology and Visual Sciences Mutah UniversityAl-Karak 11183Jordan Royal Medical Services Department of Ophthalmology Amman 11855Jordan Department of Ophthalmology and Visual Sciences Al-Sharif Eye CenterAmman 11194Jordan Jordanian Menistrery of Health IrbidAmman 11855Jordan National Woman's Health Care Center(NWHCC) Amman 11855Jordan

AIM:To share the results of a national screening program for amblyopia in school children in the north of ***:This is a prospective national screening study for *** program rolls first and second-grade children(6 to 7 years old) in the north of *** eye examination included:best-corrected visual acuity,cover-uncover test,and cycloplegic *** visual acuity was tested using an ETDRS visual acuity chart without ***,children were tested with full cycloplegic refraction when the test criteria were *** amblyopia was defined as a best-corrected visual acuity difference of 2 or more *** comparison,bilateral amblyopia was defined as a best-corrected visual acuity of 20/40 or worse in the best ***:The prevalence of amblyopia for the total sample tested(n=17 203) was 2.78%(n=479).The most common cause of amblyopia was hypermetropia(64.45%),followed by previous ocular surgeries(15.1%),myopia(10.43%),strabismus(9.39%),and congenital cataract(0.63%).CONCLUSION:This is the first and only study,identifing modifiable risk factors in Jordanian children with *** their first couple of years of elementary education,many Jordanian children are affected by amblyopia and pass unnoticed.A more governmental effort is needed into screening programs to improve vision in the Jordanian population.

关键词： amblyopia screening Jordan community ophthalmology pediatric ophthalmology population-based study screening program

Impact of maternal HBsAg carrier status on pregnancy outcomes in Duhok city, Iraq

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Asian Pacific Journal of Tropical Biomedicine 2017年第11期7卷 1010-1013页

作者： Amira S. khalil Nawfal R. hussein Maida Y. Shamdeen Department of Gynecology and Obstetrics College of MedicineUniversity of DuhokDuhokKurdistan RegionIraq Department of Internal Medicine Azadi Teaching HospitalCollege of MedicineUniversity of DuhokDuhokKurdistan RegionIraq

Objective: To investigate the relationship between hepatitis B virus(HBV) positivity and pregnancy outcomes. also, the association between HBV-related risk factors and HBV status was ***: A total of 100 HBV positive pregnant women were recruited and the pregnancy outcomes were compared with 301 HBV negative women. Blood samples were collected and tested for HBV by HBs Ag ELISA. Data were collected for recruited subjects using interview ***: Data analysis showed that 51/100(51%) of the HBV-positive subjects gave a history of HBV in the family which was significantly higher than that of HBV-negative patients [41/301(13.6%) P = 0.001]. A significant association was found between positive history of surgery and HBs Ag positivity(P = 0.009). Then, pregnancy outcomes were stratified according to the HBV positivity. No significant association was found between HBV status and pregnancy outcomes(P > 0.05 for all).Conclusions: Positive family history of HBV and previous surgical procedures are associated with higher rate of HBV positivity. No association is found between HBV positivity and pregnancy outcomes.

关键词： HBV Pregnancy outcomes Abortion Preeclampsia Gestational diabetes Iraq

Pregnancy outcome of lactating dairy cows assigned for Presynch-Ovsynchsynchronization program and inseminated either at detected standing heat or at scheduled fixed time

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Asian pacific Journal of Reproduction 2019年第4期8卷 181-186页

作者： Abdel-Tawab Abdel-Razek Yassyn khalil Mahmoud Mohamed hussein Theriogenology Department Faculty of Veterinary MedicineBeni-Suef UniversityBeni-SuefEgypt

Objective: To determine if insemination at standing heat results in a similar or higher pregnancy rate compared with fixed time artificial insemination, and to study some factors affecting the pregnancy rate. Methods: A total of 8944 inseminations were included in this study, from which 6823 inseminations were done in Holstein cows and 2121 inseminations were performed in Simmental cows. all cows were subjected to a Presynch-Ovsynch protocol. Cows detected in estrus (n=7424) were artificially inseminated, whereas cows not observed in estrus (n=1520) were submitted to fixed time artificial insemination. Results: The overall pregnancy rate of cows inseminated on the basis of the detected standing heat was comparable to that recorded for cows receiving fixed time artificial insemination. A higher pregnancy rate was recorded for cows during cold months than that recorded during hot months (P=0.000). A higher pregnancy rate was recorded for Simmental compared with that recorded for Holstein cows (P=0.001). Regarding parity, significant differences in the pregnancy rate were detected between primiparous and multiparous cows (P=0.040). In addition, artificial insemination technicians had no sigificant effect on pregnancy rate (P>0.05). Meanwhile, the used artificial insemination sires significantly (P=0.000) impacted the pregnancy rate. Conclusions: Insemination of cows detected in standing heat prior to predetermined fixed time results in similar pregnancy outcome and decreases days to the first service compared with insemination at the scheduled fixed time at the end of the Presynch-Ovsynch synchronization program. The overall pregnancy outcome is not affected by the breeding program, but it is highly impacted by cow's breed, parity, artificial insemination sire and breeding season.

关键词： Dairy cow Presynch Ovsynch Standing heat Fixed time artificial insemination