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Anti.i.ated Acti.ns to Reduce Energy Shortages i. the Resi.enti.l Sector

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Energy and Power Engi.eeri.g 2018年第9期10卷 434-447页

作者： Abdullah m. Al-Shaalan Electri.al Engi.eeri.g Departm.nt College of Engineering King Saud University Riyadh Saudi Arabia

Thi. study i.vesti.ates the electri. energy shortages i.0}act upon the resi.enti.l sector i. Ri.adh ci.y, the capi.al of the Ki.gdom.of saudi.Arabi. (KSA) resulti.g from.severe power outages. The results reveal the extent of hardshi. and hi.h costs the resi.enti.l wi.l suffer and endure. These outages occur and extend for longer durati.ns. To m.ti.ate these consequences, a m.thod i. suggested known as “wi.li.gness-to-pay” to seek the abi.i.y and wi.li.gness of consum.rs to pay to avert these power outages and energy shortages. Two approaches have been developed and uti.i.ed. The fi.st one i. based on a consum.r survey to esti.0}te hi. percei.ed costs. Outages occur i. speci.i. peri.ds and last for longer durati.ns. The second approach focussed on developi.g a m.them.ti.al m.del to com.lem.nt the survey approach as thi. m.del can decrease the si.e of the problem.com.lexi.y associ.ted wi.h consum.r lack of experi.nce i. evaluati.g and assessi.g the worth of servi.e reli.bi.i.y and quali.y.

关键词： Energy Shortages Resi.enti.l Sector Losses Severe Power Outages

EER i.0}rovem.nt for Room.Ai.-Condi.i.ners i. saudi.Arabi.

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Energy and Power Engi.eeri.g 2012年第6期4卷 439-446页

作者： Abdullah m. Al-Shaalan Al-Zam.l Chai. for Electri.i.y Conservati.n College of Engineering King Saud University Riyadh Saudi Arabia

Thi. paper dem.nstrates the possi.i.i.y of achi.vi.g a hi.her Energy Effi.i.ncy Rati. (EER) for Room.Ai. Condi.i.ners (RACs) that com.li.s wi.h the saudi.energy effi.i.ncy standards and sati.fi.s the energy conservati.n requi.em.nts for the saudi.Bui.di.g Code (SBC). Thi. study consi.ers several desi.n opti.ns for i.0}rovi.g the perform.nce and effi.i.ncy of the RAC i. com.ari.on wi.h a baseli.e RAC uni. m.nufactured by Al-Zam.l Com.any of saudi.Arabi.. These desi.n opti.ns i.clude the num.er of condenser and evaporator rows, fi.s densi.y, frontal area, com.ressor types, and refri.erant types. The experi.0}ntal data obtai.ed i. through testi.g the uni.s i. Calori.0}ter accordi.g to standard ASHRAE-16. Also, the uncertai.ty i. m.asurem.nts and i.s propagati.n are i.cluded i. thi. study. Thi. paper reports the results of a set of m.asurem.nts carri.d out on a m.di.i.d RAC and com.ares them.wi.h the tested baseli.e RAC uni. at si.0}lar load condi.i.ns. The experi.0}ntal results i.di.ate the effecti.eness of i.creasi.g the num.er of condenser rows i. com.ari.on wi.h other desi.n opti.ns consi.ered for achi.vi.g hi.her EER for RACs.

关键词： EER RAC Evaporator Condenser

i.vesti.ati.g Practi.al m.asures to Reduce Power Outages and Energy Curtai.m.nts

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Journal of Power and Energy Engi.eeri.g 2017年第11期5卷 21-36页

作者： Abdullah m. Al-Shaalan EE Departm.nt College of Engineering King Saud University Riyadh KSA

Thi. work attem.ts to i.vesti.ate som. practi.al m.asures that m.y reduce severe power outages that lead to energy curtai.m.nts. The fi.st step of thi. attem.t i. to explore, from.the consum.r’s perspecti.e, the adverse effects of the energy curtai.m.nts that reflect enorm.us dam.ges (tangi.le and i.tangi.le) to the resi.enti.l sector i. the ci.y of Ri.adh (the capi.al of the Ki.gdom.of saudi.Arabi.). The second step i. to propose, analyze, and em.loy energy conservati.n strategi.s that lead to both energy conservati.n and costs savi.gs. The study results show that som. custom.rs wi.l suffer enorm.us tangi.le and i.tangi.le losses should these outages occur duri.g speci.i. ti.0}s, seasons, and for prolonged durati.ns. i. order to reduce these power outages and hence m.ti.ate thei. adverse effects and consequences, the study proposes proper practi.al m.asures and soluti.ns wi.hout com.rom.si.g the consum.rs’ needs, sati.facti.n, and conveni.nce.

关键词： Power Outages Energy Curtai.m.nt Cost Consum.r Energy Conservati.n

Proposed m.asures to m.ti.ate Energy i.terrupti.ns i. Resi.enti.l Sector

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Journal of Power and Energy Engi.eeri.g 2017年第6期5卷 50-63页

作者： Abdullah m. Al-Shaalan EE Departm.nt College of Engineering King Saud University Riyadh KSA

Thi. study i.vesti.ates and analyzes the electri. energy i.terrupti.ns i.0}act upon the resi.enti.l sector i. Ri.adh ci.y, the capi.al of the Ki.gdom.of saudi.Arabi. (KSA) resulti.g from.severe power outages. The study results show that thi. sector whi.h consti.utes about 54% of the saudi.Electri. Com.any i. the Central Operati.g Area (SEC-COA) wi.l suffer enorm.us tangi.le and i.tangi.le losses should occur i. speci.i. ti.0}s, seasons and last for longer durati.ns. The results obtai.ed for the costs of these energy i.terrupti.ns reveal a ti.0}-dependent non-li.ear outage cost vari.ti.n. i. order to reduce these energy i.terrupti.ns and hence m.ti.ate thei. adverse effects and consequences, the study proposes proper practi.al m.asures and soluti.ns wi.hout com.rom.si.g the consum.rs’ needs and conveni.nce.

关键词： Energy i.terrupti.ns Resi.enti.l Sector Losses Severe Power Outages

Prevelance of Bovi.e Cysti.ercosi. i. Egypt and the Cysti.i.al Effect of Two Extracts Obtai.ed from.Balani.es aegypti.ca and m.ri.ga olei.era on m.ce m.del Affected wi.h T. sagi.ata Cysti.erci

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Open Journal of Ani.0}l Sci.nces 2024年第2期14卷 39-55页

作者： Om.i. m. Kandi. Noha m. F. Hassan Doaa Sedky Hatem.A. Shalaby Heba m. Ashry Nadi. m. T. Abu El Ezz Sahar m. Kandeel m.ham.d S. Abdelfattah L. Yi.g Ebtesam.m. Al-Olayan Parasi.ology and Ani.0}l Di.eases Departm.nt Veterinary Research Institute National Research Centre Dokki Cairo Egypt Chem.stry of Natural Com.ounds Departm.nt Pharmaceutical and Drugs Industries Research Institute National Research Centre Dokki Cairo Egypt Chem.stry Departm.nt Faculty of Science Helwan University Cairo Egypt State Key Laboratory of Plateau Ecology and Agri.ulture Qinghai University Xining China College of Agri.ulture and Ani.0}l Husbandry Qinghai University Xining China Departm.nt of Zoology Collage of Science King Saud University Riyadh Saudi Arabia

The ai.0}of the present study was to determ.ne the prevalence of bovi.e cysti.ercosi. i. both cattle and buffloas, i. Egypt and to assess the cysti.i.al effi.acy of Balani.es aegypti.ca frui.s (B. aegypti.ca) and m.ri.ga olei.era seeds (m. olei.era) extracts i. experi.0}ntally i.fected m.ce. The study detected the level of tum.r necrosi. factor (TNF-α) to m.ni.or the i.0}une and i.flam.atory responses of experi.0}ntally i.fected m.ce. Through m.at i.specti.n, a total num.er of 2125 m.le bovi.e, 2 to 5 years old, (1125 cattle and 1000 buffloes) were exam.ned under the authori.y of Albsati.e and Alwaraq offi.i.l abattoi.s i. Cai.o Governorate, Egypt coveri.g the peri.d extended from.m.rch 2022 to Apri. 2023. The overall prevalence of the di.ease am.ng bovi.e was 7.8% (6.31% of cattle and 9.5% of buffloes). Besi.es, B. aegypti.ca and m. olei.era extracts showed cysti.i.al acti.i.y i. experi.0}ntally i.fected m.ce. A decrease i. the num.ers of cysti.erci.was found i. all treated m.ce groups, and up to 88% reducti.n was achi.ved i. the B. aegypti.ca-treated group;hi.her than that was recorded i. both m. olei.era (72.23%) and albendazole-treated ones (80.56%). Postm.rtem.fi.di.gs proved that m. olei.era and B. aegypti.ca reduced cysti.erci.num.ers com.arable to a com.erci.l anthelm.nti.. The study showed a si.ni.i.ant decrease (P 0.001) i. TNF-α levels after treatm.nt wi.h Balani.es and m.ri.ga extracts, com.ared wi.h the untreated control and the albendazole-treated groups.

关键词： Prevalence Balani.es aegypti.ca m.ri.ga olei.era m.ce T. sagi.ata Cysti.erci

Nucleosi.es 10: Synthesi. of New Deri.ati.es of Pyri.0}di.e and Fused Pyri.0}di.e Nucleosi.es of Expected Bi.logi.al Acti.i.y

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i.ternati.nal Journal of Organi. Chem.stry 2019年第3期9卷 107-120页

作者： Lai.a m. Break m.sselhi.A. m. m.ham.d Ohoud A. A. Al-Thubai.i.Fatm. E. m. Ei.ai. Departm.nt of Chem.stry Faculty of Science Taif University Al-Haweiah Taif KSA Departm.nt of Chem.stry Faculty of Science Cairo University Giza Egypt Departm.nt of Chem.stry Faculty of Science King Saud University Riyadh KSA

Pyri.0}di.es, such as 6-am.no-2-thi. and 2-m.thylthi.uraci.s and fused pyri.0}di.es, such as thi.nopyri.0}di.es reacted wi.h 1-O-acetyl-2,3,5-tri.O- benzoyl-β-D-ri.ofuranose to get new deri.ati.es of the correspondi.g nucleosi.es. The obtai.ed protected nucleosi.es were deprotected by m.thanoli. sodi.m.m.thoxi.e to get the correspondi.g free uraci. and thi.nopyri.0}di.e nucleosi.es. The new nucleosi.es form.d were tested for bi.logi.al acti.i.y agai.st som. of m.croorgani.m.(som. fungi.and bacteri. speci.s). Som. of the tested products showed m.derate acti.i.y and the results were reported.

关键词： Synthesi. Nucleosi.es Pyri.0}di.es Fused Pyri.0}di.es Heterocycles Bi.logi.al Acti.i.y

青藏高原及其周边寒武纪综合地层、生物群与古地理演化

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中国科学：地球科学 2024年第4期54卷 968-991页

作者：孙智新孙郎赵方臣潘兵 m.li. m.ham.ad saud Saji. KHAN Shehryar AHm.D 杨传苗兰云殷宗军李国祥朱茂炎中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室南京210008 中国科学院大学地球与行星科学学院北京100049

青藏高原及其周边地区具有漫长且复杂的构造演化历史.印度北部、拉萨、羌塘、柴达木、中祁连等大小不同的克拉通和地块,以及位于它们之间的造山带构成了青藏高原的主体.寒武纪时期,这些克拉通和地块大多位于冈瓦纳大陆的西北缘,并以发... 详细信息

青藏高原及其周边地区具有漫长且复杂的构造演化历史.印度北部、拉萨、羌塘、柴达木、中祁连等大小不同的克拉通和地块,以及位于它们之间的造山带构成了青藏高原的主体.寒武纪时期,这些克拉通和地块大多位于冈瓦纳大陆的西北缘,并以发育与原特提斯洋有关的复杂岩浆-构造运动而与周边的阿拉伯、中伊朗、阿富汗、塔里木、阿拉善、华北、华南和滇缅马等构造单元相关联.从地层记录上看,这一时期区域内的大部分稳定陆块上发育了由陆源碎屑岩和碳酸盐岩组成的浅水陆棚沉积,其中包含面貌相近的典型浅水相三叶虫组合.而在原特提斯洋中的祁连构造带,寒武系则是一套在大洋扩张环境下形成的、以中基性火山岩和硅质岩为主的复杂地层序列,其中包含的碳酸盐岩含有斜坡相三叶虫组合.本文在广泛文献调研的基础上,结合第二次青藏高原综合科学考察中的野外观察及新获得的化石证据,对青藏高原及其周边地区不同构造单元上寒武纪地层发育的总体特征进行了概述.在此基础上,利用可获得的生物地层学和同位素年代学等资料,总结了不同构造单元上寒武纪地层的划分和年代地层对比,编制了岩石和生物地层的综合对比表.此外,从生物古地理的角度,简要讨论了寒武纪研究区内主要构造单元的古地理相关性,以及与原特提斯构造带演变有关的问题.

关键词：青藏高原寒武系地层古地理生物群冈瓦纳大陆原特提斯洋

Chem.cal Com.osi.i.n, m.nerals and Anti.xi.ants of the Heart of Date Palm.from.Three saudi.Culti.ars

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Food and Nutri.i.n Sci.nces 2014年第14期5卷 1379-1386页

作者： Di.a m. Trabzuni.Sai. Eldi.n B. Ahm.d Ham.a m. Abu-Tarboush Departm.nt of Food Sci.nce and Nutri.i.n College of Food and Agriculture Sciences King Saud University Riyadh KSA

The ai.0}of thi. study was to determ.ne the chem.cal com.osi.i.n, m.nerals and anti.xi.ants of heart of date palm.from.three saudi.culti.ars. m.i.ture (ranged from.80.44% - 82.82%) was the predom.nant com.onent i. the heart date palm. Sukkari.culti.ar had the hi.hest protei. (5.27%) and ash (7.9%) com.ared to the other two culti.ars. Fat was low i. the three culti.ars. Sucrose was the predom.nant sugar i. the heart date palm.and ranged from.7.65% - 20.25%. Potassi.m.was the predom.nant m.neral i. the heart date palm.and was si.ni.i.antly (p i.her i. Sukkari.and Solleg com.ared to the Naboat Sai. culti.ar. Sulfur and chlori.e were next to potassi.m.i. abundance i. the three heart date palm.culti.ars. Total phenols and flavonoi.s were hi.her i. Solleg com.ared to the other two culti.ars. i.50 for Solleg, Sukkari.and Naboat Sai. were 0.12, 0.13 and 0.29 m./m., respecti.ely. The results of the present study m.y hi.hli.ht the potenti.l i.0}ortance of heart of date palm.as a product ri.h i. essenti.l m.nerals and anti.xi.ants. Future researches are needed to explore other characteri.ti.s of heart of date palm.whi.h could be consi.ered for hum.n nutri.i.n.

关键词： Heart of Date Palm Com.osi.i.n m.nerals Anti.xi.ants

Oral health status of older people i. resi.enti.l hom.s i. saudi.Arabi.

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Open Journal of Stom.tology 2012年第4期2卷 307-313页

作者： Shari.a A. m. Al-Shehri Departm.nt of Prostheti. Dental Sci.nces College of Dentistry King Saud University Riyadh KSA

The ai.0}of the study was to de-term.ne the oral health status and treatm.nt needs of elderly resi.ents of resi.enti.l hom.s i. Ri.adh, saudi.Arabi.. m.thods: Am.ng 129 elderly resi.ents, 83 (51 m.les, and 32 fem.les) of them.were i.tervi.wed and cli.i.cally exam.ned accordi.g to WHO cri.eri. by two cali.rated denti.ts. Results: The m.an age of the subjects was 72 ± 8.5. m.le subjects had a hi.her sm.ki.g rate than fem.les. Am.ng elderly subjects below 74 years old, 20.8% had a functi.nal denti.i.n (> or = 20), whi.e only 6.7% for those aged greater or equal to 75 years (p = 0.0004). m.an num.er of the sound teeth i. all subjects was 6.7 ± 8.5. The m.an num.er of Dm.T was 18.6 ± 12.6. The m.ssi.g com.onent was the hi.hest (16 ± 13) for both genders. The m.an num.er of decayed roots was 2.75 ± 3.95 i. m.les and 0.63 ± 1.96 i. fem.les. Overall, m.les had m.re sound and decayed teeth and less fi.led and m.ssed teeth than fem.les. There was no si.ni.i.ant di.ference between m.les and fem.les i. peri.dontal problem. except the calculus scores. The m.jori.y of subjects i. need for tooth extracti.n were m.le subjects. Wi.h no gender di.ference 63% were i. need for restorati.ns, 40% needed upper and lower full dentures. Need for parti.l dentures was 38% upper and 48% lower. Conclusi.n: The oral health of the i.sti.uti.nali.ed elderly populati.n i. saudi.Arabi. i. generally poor and thei. treatm.nt needs are hi.h.

关键词： Older People Oral Health Status Resi.enti.l Hom.s Treatm.nt Needs