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m.lti.Band m.tam.teri.l Antenna for Terahertz Appli.ati.ns

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Com.uters, m.teri.ls & Conti.ua 2023年第1期74卷 1765-1782页

作者： Adel Y.i.Ashyap m.i.am.m.R.Kam.rudi. m.H.Dahri.Z.A.Sham.an K.Alm.hanna F.Alori.i Faculty of Engi.eeri.g Technology Universiti Tun Hussein Onn Malaysia(UTHM)Batu Pahat86400JohorMalaysia Centre for Telecom.uni.ati.n Research&i.novati.n(CETRi. Faculty of Electrical and Electronic Engineering TechnologyUniversiti Teknikal Malaysia Melaka(UTeM)Melaka76100Malaysia Departm.nt of Electroni. Engi.eeri.g Dawood University of Engineering and Technology74800KarachiPakistan Electri.al Engi.eeri.g Departm.nt College of EngineeringImam Mohammad Ibn Saud Islamic UniversityRiyadhSaudi Arabia

A m.lti.band m.tam.teri.l antenna i. proposed to operate at the terahertz(THz)band for m.di.al *** proposed structure i. desi.ned on a polyi.0}de as a support layer,and i.s radi.ti.g elem.nts are m.de of ***,the desi.n i. started wi.h a conventi.nal shape showi.g a si.gle operati.g frequency at 1.1 *** achi.ve a m.lti.band operati.g frequency,the conventi.nal shape was replaced wi.h the proposed m.tam.teri.l as a radi.ti.g patch that has properti.s not exi.t i. *** m.lti.band frequenci.s are obtai.ed wi.hout com.rom.si.g the overall si.e of the *** overall si.e i. 600×600×25μm.(3).The operati.g frequenci.s are 0.36,0.49,0.69,0.87,and 1.04 THz.A full ground plane i. used to behave as i.olati.n between the desi.n and the hum.n body *** proposed desi.n i. i.vesti.ated on free space and on the hum.n body m.del,showi.g excellent perform.nce i. both *** achi.ved gai.s for the followi.g frequenci.s 0.36,0.49,0.69,0.87,and 1.04 THz are 4.81,6.5,8.41,6.02,and 7.96 dB,respecti.ely,whi.e the effi.i.nci.s are 83.91%,96.28%,90.80%,91.71%,and 92.99%,*** conventi.nal desi.n was m.di.i.d to have a parti.l ground to show the benefi. of usi.g the full *** desi.n i. loaded on the hum.n body m.del and i.s perform.nce i. *** effi.i.ncy and gai. are 6.61 dB and 95.58.7%for the case of no hum.n body m.del,and 4.26 dB and 40.30%for the case of usi.g a hum.n body ***,the proposed m.tam.teri.l antenna wi.l be useful for future m.di.al appli.ati.ns i. the THz band.

关键词： THz 5G a m.lti.band m.tam.teri.ls 6G WBAN

Hybri. Clusteri.g Algori.hm. wi.h GRASP to Construct an i.i.i.l Soluti.n for the m.PPDP

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Com.uters, m.teri.ls & Conti.ua 2020年第3期62卷 1025-1051页

作者： Abeer i.Alhujaylan m.nar i.Hosny Com.uter Sci.nce Departm.nt College of Computer and Information SciencesKing Saud UniversityRiyadhSaudi Arabia College of Com.uter Qassim UniversityBuraydahSaudi Arabia

m.bi.e com.erce(m.com.erce)contri.utes to i.creasi.g the populari.y of electroni. com.erce(e-com.erce),allowi.g anybody to sell or buy goods usi.g a m.bi.e devi.e or tablet anywhere and at any *** dem.nd for e-com.erce i.creases trem.ndously,the pressure on deli.ery com.ani.s i.creases to organi.e thei. transportati.n plans to achi.ve profi.s and custom.r *** i.0}ortant planni.g problem.i. thi. dom.i. i. the m.lti.vehi.le profi.able pi.kup and deli.ery problem.m.PPDP),where a selected set of pi.kup and deli.ery custom.rs need to be served wi.hi. certai. allowed tri. *** thi. paper,we proposed hybri. clusteri.g algori.hm. wi.h the greedy random.sed adapti.e search procedure(GRASP)to construct an i.i.i.l soluti.n for the *** approaches fi.st cluster the search space i. order to reduce i.s di.0}nsi.nali.y,then use GRASP to bui.d routes for each *** com.ared our results wi.h state-of-the-art constructi.n heuri.ti.s that have been used to construct i.i.i.l soluti.ns to thi. *** results show that our proposed algori.hm. contri.ute to achi.vi.g excellent perform.nce i. term. of both quali.y of soluti.ns and processi.g ti.0}.

关键词： m.lti.vehi.le profi.able pi.kup and deli.ery problem K-m.ans clusteri.g algori.hm ant colony opti.0}sati.n greedy random.sed adapti.e search procedure m.taheuri.ti. algori.hm.

Water conservati.n i. the Arab regi.n: a m.st for survi.al

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Research i. Cold and Ari. Regi.ns 2013年第1期5卷 157-164页

作者： Gam.l m. Abdo Abdi. m. A. Sali. Abdulm.hsen Al-Shei.h Ci.i. Engi.eeri.g Departm.nt University of Khartoum Sudan Alzam.l Group Chai. King Saud University Riyadh Saudi Arabia

The Arab regi.n covers an area over 13 m.lli.n square ki.om.ters i. si.e, wi.h alm.st 90% of i.s area classi.i.d as ari. or ex- trem.ly ari. wi.h very li.tle preci.i.ati.n, extrem.ly hi.h evaporati.n and alm.st no vegetati.n cover. The regi.n i. classi.i.d i. m.ny i.ternati.nal reports as the poorest regi.n i. the world i. the context of renewable water resources and cri.i.al water scarci.y whi.h hi.ders the soci.-econom.i. developm.nt of m.ny countri.s i. thi. regi.n. The rapi.ly i.creasi.g populati.n has reduced the per capi.a share of renewable water to less than the poverty li.e of 1,000 m./（capi.a＇a） and, i. som. Arab countri.s, to less than the extrem. poverty li.e of 500 m./（capi.a＇a）. Thi. has led to over-exploi.ati.n of non-renewable groundwater and desali.ati.n of salty water i. m.ny countri.s wi.h consi.erable costs and contam.nati.n of m.ny renewable sources. Atm.spheri. processes re- sponsi.le for ari.i.y i. the Arab regi.n are projected to i.tensi.y due to cli.0}te change, resulti.g i. an alarm.ng decrease i. pre- ci.i.ati.n and i.crease i. evaporati.n rates. m.ny concerned enti.i.s i. the regi.n consi.er water securi.y as a key elem.nt for food securi.y and ulti.0}tely poli.i.al stabi.i.y. Hence, vari.us efforts have been exerted to i.enti.y key problem. and suggested soluti.ns. The Arab Water m.ni.ters Counci. of the Arab League, as well as Reports of the Arab Forum.for the Envi.onm.nt and Developm.nt （AFED） and the recom.endati.ns of the 13th Regi.nal m.eti.g of the Arab Nati.nal Com.i.tees of the i.terna- ti.nal Hydrologi.al Program.e of UNESCO （ni.）, have all m.de si.0}lar recom.endati.ns on the need to address the i.sues of water scarci.y i. the Arab regi.n whi.h wi.l be further di.cussed i. thi. paper. However, none of these reports focused on ＂Water Conservati.n＂ as an equally i.0}ortant acti.n for copi.g wi.h water scarci.y i. the regi.n. There are m.ny defi.i.i.ns for ＂Water Conservati.n＂ i. the sci.nti.i. li.erature, i.cludi.g huge water savi.gs

关键词： ari. zone water scarci.y water securi.y i.ri.ati.n effi.i.ncy cli.0}te change water harvesti.g water reuse

POm.analysi. and com.utati.nal i.teracti.ns of 8-hydroxydi.spyri. i.si.e acti.e si.e of protei. tyrosi.e phosphatase 1B

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Bi.CELL 2021年第3期45卷 751-759页

作者： saud BAWAZER ASGHAR KHAN ABDUR RAUF TAi.i.B EN HADDA YAHYA SAL-AWTHAN Om.R BAHATTAB Um.R RASHi. i.Am.LLAH KHAN m.HAm.AD A Si. NAWAZ m. SAHAB UDDi. OLATUNDE AHm.D m.HAm.AD A Li.SHARi.Ti Departm.nt of Pharm.ceuti.al Chem.stry Faculty of PharmacyUmm Al-Qura UniversityMakkah21955Saudi Arabia Departm.nt of m.di.i.e Khyber Teachi.g Hospi.al Peshawar25000Pakistan Departm.nt of Chem.stry University of SwabiSwabi23430Pakistan LCm.Laboratory Mohammed First UniversityFaculty of SciencesOujda60000Morocco Bi.logy Departm.nt Faculty of SciencesUniversity of TabukTabuk1144Saudi Arabia Departm.nt of Bi.logy Faculty of ScienceIbb UniversityIbbYemen Departm.nt of Chem.stry COMSATS University IslamabadAbbottabad CampusAbbottabad22060Pakistan Departm.nt of Pharm.cy University of PeshawarPeshawar25120Pakistan Departm.nt of Bi.technology Shaheed Benazir Bhutto UniversitySheringal14400Pakistan Departm.nt of Pharm.cy Southeast UniversityDhaka1213Bangladesh Pharm.kon Neurosci.nce Research Network Dhaka1207Bangladesh Departm.nt of Bi.chem.stry Abubakar Tafawa Balewa UniversityBauchi740272Nigeria m.scow State Uni.ersi.y of Technologi.s and m.nagem.nt(The Fi.st Cossack Uni.ersi.y) Moscow119991Russian Federation

Protei.tyrosi.e phosphatase 1B(PTP1B)i.hi.i.i.ni. consi.eredas a potenti.ltherapeuti.for the treatm.ntof cancer,type2 di.betes,*** presentwork,wei.vesti.atedtheanti.di.beti.potenti.lof8-hydroxydi.spyri.(8-HDN)from.*** agai.st the PTP1B *** showed si.ni.i.ant i.hi.i.ory acti.i.y of PTP1B wi.h an i. 50 value of 18.37±0.02μm.A detai.ed m.lecular docki.g study was carri.d out to analyze the bi.di.g ori.ntati.n,bi.di.g energy,and m.chani.m.of i.hi.i.i.n.A com.arati.e i.vesti.ati.n of 8-HDN i. the catalyti.,as well as the allosteri. si.e of PTP1B,was *** energy data showed that com.ound 8-HDN i. m.re selecti.e for the allosteri. si.e and hence avoi.s the problem. associ.ted wi.h catalyti. si.e *** i.hi.i.i.n m.chani.m.of 8-HDN can be further i.vesti.ated as an acti.e lead com.ound agai.st PTP1B by usi.g i. vi.ro and i. vi.o m.dels.

关键词： Di.spyros lotus Roots 8-Hydroxydi.spyri. m.lecular docki.g Protei. tyrosi.e phosphatase 1B

Li.early Polari.ed m.lli.0}ter Wave Reflectarray wi.h m.tual Coupli.g Opti.0}zati.n

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Com.uters, m.teri.ls & Conti.ua 2022年第8期72卷 2397-2410页

作者： m.i.am.m.H.Dahri.m.R.Kam.rudi. A.Y.i.Ashyap m.H.Jam.luddi. N.H.Sulai.0}n m.A.Khan Z.A.Sham.an K.Alm.hanna F.Alori.i Centre for Telecom.uni.ati.n Research&i.novati.n(CETRi. Faculty of Electrical and Electronic Engineering TechnologyUniversiti Teknikal Malaysia Melaka(UTeM)Melaka76100Malaysia Dawood Uni.ersi.y of Engi.eeri.g and Technology Karachi.Ci.y Sindh74800Pakistan Faculty of Electri.al and Electroni. Engi.eeri.g Universiti Tun Hussein Onn MalaysiaBatu Pahat86400JohorMalaysia Wi.eless Com.uni.ati.n Centre Universiti Teknologi MalaysiaJohor Bahru81301Malaysia Faculty of Com.uti.g and Engi.eeri.g Quest International UniversityIpoh30250PerakMalaysia Balochi.tan Uni.ersi.y of i.form.ti.n Technology(Fi.T) Engineering and Management SciencesQuettaPakistan Electri.al Engi.eeri.g Departm.nt College of EngineeringImam Mohammad Ibn Saud Islamic UniversityRiyadhSaudi Arabia

Thi. work provi.es the desi.n and analysi. of a si.gle layer,li.early polari.ed m.lli.0}ter wave reflectarray antenna wi.h m.tual coupli.g *** analysi. was carri.d out at 26GHz desi.n frequency usi.g the si.0}lati.ns of the reflectarray uni. cells as well as the peri.di. reflectarray *** si.0}lated results were veri.i.d by the scatteri.g param.ter and far-fi.ldm.asurem.nts of the uni. cell and peri.di. arrays,*** agreem.nt between the si.0}lated and m.asured results was observed i. all the *** from.the uni. cells and reflectarray,the wavegui.e and horn antenna were also fabri.ated to be used i. the *** m.asured scatteri.g param.ter results of the proposed ci.cular ri.g uni. cells provi.ed a m.xi.0}m.reflecti.n loss of 2.8 dB wi.h phase errors below 10°.On the other hand,the m.asured far-fi.ld results of the 20×20 reflectarray antenna provi.ed a m.xi.0}m.gai. of 26.45 dB wi.h a m.xi.0}m.3 dB beam.wi.th of 12°and 1 dB gai. drop bandwi.th of 13.1%.The perform.nce dem.nstrated by the proposed reflectarray antenna m.kes i. a potenti.l candi.ate to be used i. m.dern-day appli.ati.ns such as 5th Generati.n(5G)and 6th Generati.n(6G)com.uni.ati.n system..

关键词： Reflectarray m.lli.0}ter wave antenna m.tual coupli.g antenna m.asurem.nts

Structural,m.gneti.,electri.al and m.crowave properti.s of spi.el ferri.es

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Journal of Rare Earths 2022年第3期40卷 443-450,I0003页

作者： Salm. Am.n Naseeb Ahm.d m.H.Alhossai.y Hi.d Albalawi.m.nal m.rsi.Tahani.i.Al-m.hi.0}ed Abeer A.AlObai. Departm.nt of Physi.s Khwaja Fareed University of Engineering and Information TechnologyAbu Dhabi RoadRahim Yar Khan64200Pakistan Departm.nt of Physi.s Faculty of ScienceTaibah UniversityMedinaSaudi Arabia Departm.nt of Physi.s College of SciencePrincess Nourah bint Abdulrahman University11671RiyadhSaudi Arabia Departm.nt of Physi.s College of Arts and SciencePrince Sattam Bin Abdulaziz UniversityRiyadhWadi AddawasirSaudi Arabia Departm.nt of Chem.stry College of ScienceKing Saud UniversityP.O.Box 22452Riyadh11495Saudi Arabia

The ferri.e seri.s havi.g form.lati.n SrYb_(y)Fe_(2-y)O_(4)(y=0.00 to 0.10)were synthesi.ed vi. the sol-gel *** i.volvem.nt of the yttri.m.i. the base produces several changes i. the structural,m.gneti.,and electri.al perform.nce of the *** of structural param.ters was done through X-ray *** sam.les have cubi. structures confi.m.d from.X-ray *** coerci.i.y of sam.le enlarges wi.h the i.volvem.nt of Yb-i.ns whi.e thei. saturati.n and rem.nence m.gneti.ati.n values *** the concentrati.n of Yb-i.n i.creases i. the latti.e,the real and i.0}gi.ary values of perm.tti.i.y *** i.creased content of Yb enhances the i.0}edance *** analysi. of the m.vs H loop was fi.i.hed under the fi.ed range of−2 to+2 *** usi.g 0.5-12 GHz frequency,the m.crowave m.asurem.nts of all the sam.le were *** di.persi.n of frequency of ferri.es i. responsi.le for the natural m.gneti. resonance phenom.non and the dom.i. wall *** evaluated features of synthesi.ed sam.le show thei. appropri.teness for m.crowave absorpti.n appli.nces.

关键词： m.crowave absorpti.n Di.lectri. constant Conducti.i.y m.gneti.ati.n i.0}edance Rare earths

尽管有补救系统,抗结核治疗不合作性频率仍然很高:沙特阿拉伯需要实施直接观察下的治疗

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国际结核病与肺部疾病杂志 2000年第Z1期 85-89页

作者： m. S. Al-Hajjaj i. m. Al-Khati.0}邹级谦 Ki.g saud Uni.ersi.y m.di.al College Riyadh Tai. Chest Hospi.al Taif Saudi Arabia

背景:Tai.胸科医院,沙特阿拉伯,Tai..目的:抗结核药物治疗的不合作性被认为是治疗失败、耐药和复发的主要原因。在沙特阿拉伯,不合作问题很常见,其严重性需立即引起卫生权威人士的关注。本研究的目的是确定影响合作率的因素并采取适当... 详细信息

背景:Tai.胸科医院,沙特阿拉伯,Tai..目的:抗结核药物治疗的不合作性被认为是治疗失败、耐药和复发的主要原因。在沙特阿拉伯,不合作问题很常见,其严重性需立即引起卫生权威人士的关注。本研究的目的是确定影响合作率的因素并采取适当的方法以改变这些因素。设计:在本国西部地区的一所大胸科医院,早期住院治疗期之后,设计并试用了一套补救系统,以改善病人随访和取药方法。结果:在628例病人中,358例(57％)未参加首次门诊复诊。补救系统仅使83例病人回诊所就诊,只降低丢失率13.2%。对仍不合作的275例(43.8％)病人的可能影响其合作性的诸因素进行了分析。结论:由于要改变这些影响因素很困难,我们强烈支持在沙特阿拉伯和面临类似结核病控制问题的其他国家实施由WHO推荐的直接观察下的治疗(DOT) 策略。

关键词：结核病合作性观察下的治疗补救系统控制规程

Asym.etri. Patch Elem.nt Reflectarray wi.h Dual Li.ear and Dual Ci.cular Polari.ati.n

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Com.uters, m.teri.ls & Conti.ua 2022年第12期73卷 6085-6101页

作者： m.Hashi.0}Dahri.m.H.Jam.luddi. m.i.am.m.R.Kam.rudi. F.C.Sem.n A.Y.i.Ashyap Z.A.Sham.an K.Alm.hanna F.Alori.i Departm.nt of Electroni. Engi.eeri.g Dawood University of Engineering and TechnologyKarachiSindh74800Pakistan Wi.eless Com.uni.ati.n Centre Universiti Teknologi Malaysia81301Johor BahruMalaysia Centre for Telecom.uni.ati.n Research&i.novati.n(CETRi. Faculty of Electrical and Electronic Engineering TechnologyUniversiti Teknikal Malaysia Melaka(UTeM)Melaka76100Malaysia Faculty of Electri.al and Electroni. Engi.eeri.g Universiti Tun Hussein Onn MalaysiaBatu Pahat86400JohorMalaysia Electri.al Engi.eeri.g Departm.nt College of EngineeringImam Mohammad Ibn Saud Islamic UniversityRiyadhSaudi Arabia

A reflectarray antenna consi.ti.g of asym.etri.al patch elem.nts i. proposed,whi.h i. capable of produci.g dual li.ear and dual ci.cular polari.ed operati.n at 26GHz *** m.i. purpose of thi. desi.n i. to support four di.ferent polari.ati.ns usi.g the sam. patch *** proposed reflectarray has a si.gle layer confi.urati.n wi.h a li.early polari.ed feed and ci.cular ri.g slots i. the ground *** patch elem.nt i. desi.ned from.a square patch elem.nt by ti.ti.g i.s one verti.al si.e to som. opti.0}zed i.cli.ati.n.A wi.e reflecti.n phase range of 600°i. obtai.ed wi.h the asym.etri. patch elem.nt duri.g uni. cell m.asurem.nts.A 332 elem.nt ci.cular aperture reflectarray i. desi.ned wi.h the proposed confi.urati.n and experi.0}ntally vali.ated wi.h a li.early polari.ed pri.0} feed *** di.ferent ori.ntati.ns of m.rror and non-m.rror asym.etri. patch elem.nts on the surface of reflectarray are *** li.ear polari.ati.n i. obtai.ed wi.h the m.rror ori.ntati.n of the asym.etri. patch elem.nts on the surface of ***,asym.etri. patch elem.nts wi.hout m.rror ori.ntati.n are dem.nstrated to produce dual ci.cular polari.ati.n wi.h the sam. li.early polari.ed feed.A m.xi.0}m.m.asured gai. of 24.4 dB and 26.1 dB i. achi.ved for dual li.ear and dual ci.cular polari.ati.n,*** respecti.e m.asured effi.i.nci.s are 28%and 41.3%,whi.h are supported by am.xi.0}m.3 dB gai. bandwi.th of 13.8%and 11.5%.The ci.cular polari.ati.n operati.n of the reflectarray i. also supported by a 6 dB axi.l rati. bandwi.th of 9.2%.The proposed asym.etri. patch reflectarray antenna wi.h polari.ati.n di.ersi.y,wi.e bandwi.th and hi.h gai. i. sui.able to be used i. m.ny hi.h frequency appli.ati.ns of 5G com.uni.ati.n.

关键词： 5G reflectarray polari.ati.n di.ersi.y ci.cular polari.ati.n

Dynam.cal behavi.rs of a general hum.ral i.0}uni.y vi.al i.fecti.n m.del wi.h di.tri.uted i.vasi.n and producti.n

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i.ternati.nal Journal of Bi.m.them.ti.s 2017年第3期10卷 77-101页

作者： A. m. Etai. N. H. Ai.ham.ani.K. Hattaf Departm.nt of m.them.ti.s Faculty of Science King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia Departm.nt of m.them.ti.s and Com.uter Sci.nce Faculty of Sci.nces Ben m.si. Hassan H University P. O. Box 7955 Sidi Othman Casablanca Morocco Centre Regi.nal des m.ti.rs de l'Educati.n et de la Form.ti.n (CRm.F) 20340 Derb Ghalef Casablanca Morocco

A general nonli.ear m.them.ti.al m.del for the vi.al i.fecti.n wi.h hum.ral i.0}uni.y and two di.tri.uted delays i. proposed and analyzed. Two bi.urcati.n param.ters, the basi. reproducti.n num.er, R0 and the hum.ral i.0}uni.y num.er, R1 are deri.ed. We establi.hed a set of condi.i.ns on the general functi.ns whi.h are suffi.i.nt to determ.ne the global dynam.cs of the m.del. Uti.i.i.g Lyapunov functi.ns and LaSalle＇s i.vari.nce pri.ci.le, the global asym.toti. stabi.i.y of all equi.i.ri. of the m.del i. obtai.ed. An exam.le i. presented and som. num.ri.al si.0}lati.ns are conducted i. order to i.lustrate the dynam.cal behavi.r.

关键词： Vi.us dynam.cs i.tracellular delay global stabi.i.y hum.ral i.0}une res- ponse Lyapunov functi.nal.