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Development of Ma.nesium-Domina.t Soils Under Irriga.ed a.riculture in Southern Ka.a.hsta.

Pedosphere 2009年第3期19卷 331-343页

作者： a. karimov M. Qa.IR a. NOBLE F. VYSHPOLSKY K. a.ZELM Interna.iona. Wa.er Ma.a.ement Institute (IWMI) Central Asia Regional Office Tashkent 700000 (Uzbekistan) Interna.iona. Center for a.ricultura. Resea.ch in the Dry a.ea. (ICa.Da. Aleppo 5466 (Syria) Interna.iona. Wa.er Ma.a.ement Institute (IWMI) Colombo 2075 (Sri Lanka) Interna.iona. Wa.er Ma.a.ement Institute (IWMI) c/o WorldFish Center Penang 11960 (Malaysia) Wa.er Conserva.ion La.ora.ory The Kazakh Research Institute of Water Management Ministry of Agriculture Taraz480022 (Kazakhstan) Southern Ka.a.hsta. Hydrogeology a.d La.d Recla.a.ion Expedition Shymkent (Kazakhstan)

Irra.iona. irriga.ion pra.tices in the a.ys Turkesta. Ca.a. comma.d a.ea.in the southern pa.t of Ka.a.hsta. ha.e led to the forma.ion of soils with poor physica. a.d chemica. properties. To study whether irriga.ion a.d lea.hing pra.tices a.d/or groundwa.er rise ha.e contributed to the a.cumula.ion of Mg2+ on the ca.ion excha.ge complex of these soils, historica. cha.ges in soil a.d groundwa.er qua.ity were used a. source da.a.a.d the Visua. MINTEQ model wa. a.plied to a.a.yze the chemica. composition of wa.er a.d soils in the study a.ea. The imposed irriga.ion regime a.d the lea.hing of light sierosem soils led to the dissolution a.d subsequent lea.hing of inherent gypsum a.d orga.ic ma.ter from the soil profile. Further, the domina.ion of bica.bona.e in the irriga.ion wa.er promoted wea.hering of the ca.bona.e minera.s present a. ca.cite. The higher concentra.ions of Mg2+ in compa.ison to Ca.+ in the irriga.ion wa.er resulted in the repla.ement of Na. by Mg2+ on the ca.ion excha.ge complex. In the lower pa.t of the comma.d a.ea. sha.low groundwa.er ha. contributed to the a.cumula.ion of Na. a.d to a.la.ge extent of Mg2+ on the ca.ion excha.ge sites.

关键词： excha.gea.le ma.nesium high-ma.nesium soil a.d wa.er Ka.a.hsta. la.d degra.a.ion

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聚丙烯酰胺对高黏油-水环状流流动特性的影响

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化工进展 2024年第3期43卷 1157-1166页

作者：尹晓云李静林冬胡金燕张良敬加强 karimov Rina. M 孙杰中国石油西南油气田分公司安全环保与技术监督研究院四川成都610041 页岩气评价与开采四川省重点实验室四川成都610041 西南石油大学石油与天然气工程学院四川成都610500 油气消防四川省重点实验室四川成都611731 Depa.tment of Tra.sport a.d Stora.e of Oil a.d Ga. Ufa State Petroleum Technological UniversityRussia Ufa 450062

针对稠油水环输送的水环流动改进问题,提出稠油流动边界层在聚丙烯酰胺(Pa.)水环作用下的模拟实验方法,基于自主研发设计的室内油-水两相流可视化环道实验装置,采用500#白油模拟旅大稠油,实验研究了稠油-水环状流外环水相中添加Pa.前后... 详细信息

针对稠油水环输送的水环流动改进问题,提出稠油流动边界层在聚丙烯酰胺(Pa.)水环作用下的模拟实验方法,基于自主研发设计的室内油-水两相流可视化环道实验装置,采用500#白油模拟旅大稠油,实验研究了稠油-水环状流外环水相中添加Pa.前后的流型特征与阻力特性,评价了Pa.对水环润滑的协同减阻效果,分析了Pa.对水环流动稳定性的作用机理。实验结果表明:Pa.对稠油-水环状流的流型特征与阻力特性均有显著影响,使环状流的分布区域缩小,其缩减区域转变为分层流和塞状流,当其为分层流时减阻作用丧失;当油相表观流速为0.23~0.90m/s时,Pa.减阻率随含水率增加先迅速增大后缓慢减小,在测试范围内最高达35%。研究结果可为稠油水环输送工艺优化提供理论指导和技术支持,也可为稠油管输流动改进提供新理念与新方法。

关键词：聚丙烯酰胺油水环状流流型转变压力梯度减阻率

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Flexible impeda.ce a.d ca.a.itive tensile loa. sensor ba.ed on CNT composite

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Chinese Physics B 2016年第2期25卷 568-572页

作者： Zuba.r a.ma. Kh S karimov Fa.id Toua.i Depa.tment of Electrica. Engineering College of Engineering Qatar University Doha 2713 Qatar Ghula. Isha. Kha. Institute of Engineering Sciences a.d Technology Topi District Swabi KPK 23640 Pakistan Center for Innova.ive Development of Science a.d New Technologies Academy of Sciences Aini St. 299/2 Dushanbe 734063 Tajikistan

In this pa.er, the fa.rica.ion a.d investiga.ion of flexible impeda.ce a.d ca.a.itive tensile loa. sensors ba.ed on ca.bon na.otube（CNT） composite a.e reported. On thin rubber substra.es, CNTs a.e deposited from suspension in wa.er a.d pressed a. eleva.ed tempera.ure. It is found tha. the fa.rica.ed loa. cells a.e highly sensitive to the a.plied mecha.ica. force with good repea.a.ility. The increa.e in impeda.ce of the cells is observed to be 2.0 times while the decrea.e in the ca.a.ita.ce is found to be 2.1 times a. a.plied force increa.es up to 0.3 N. The a.era.e impeda.ce a.d ca.a.itive sensitivity of the cell a.e equa. to 3.4 N^（-1） a.d 1.8 N^（-1）, respectively. Experimenta. results a.e compa.ed with the simula.ed va.ues,a.d they show tha. they a.e in rea.ona.le a.reement with ea.h other.

关键词： ca.bon na.otubes flexible tensile loa. impeda.ce ca.a.itive

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Cha.lenges for the susta.na.le use of wa.er a.d la.d resources under a.cha.ging clima.e a.d increa.ing sa.iniza.ion in the Jizza.h irriga.ion zone of Uzbekista.

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Journa. of a.id La.d 2020年第1期12卷 90-103页

作者： Ra.hid KULMa.OV Ja.ur MIRZa.V Jilili a.UDUWa.LI Ba.htiyor karimov Sta.e Key La.ora.ory of Desert a.d Oa.is Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Na.iona. University of Uzbekista. Tashkent 100170Uzbekistan Ca. Resea.ch Center for Ecology a.d Environment of Centra. a.ia Urumqi 830011China University of Chinese a.a.emy of Sciences Beijing 100049China Ta.hkent Institute of Irriga.ion a.d a.ricultura. Mecha.iza.ion Engineers Tashkent 100000Uzbekistan

Jizza.h Province in Uzbekista. is one of the la.gest irriga.ed a.ea. in Centra. a.ia.without na.ura. *** combina.ion with a.idity,clima.e cha.ge a.d extensive irriga.ion pra.tices,this ha. led to the widesprea. sa.iniza.ion of a.ricultura. *** a.m of this study wa. to identify opportunities to improve the recla.a.ion sta.us of the irriga.ed a.ea.a.d how best to effectively use the wa.er resources in Jizza.h Province ba.ed on investiga.ions conducted between 1995 a.d 2016.a.da.a.a.e of field mea.urements of groundwa.er levels,minera.iza.ion a.d soil sa.inity conducted by the provincia. Hydro-Geologica. Recla.a.ion Expeditions wa. used in the *** tota. groundwa.er minera.iza.ion wa. determined using a.porta.le electric conductometer(Progress 1T)a.d the chloride concentra.ion wa. determined using the Mohr *** soil sa.inity a.a.yses were conducted by a.plying two different methods:(1)the extra.tion a.d a.sessment of the soluble sa.t content,a.d(2)using a. SM-138 conductivity sensor a.plied to a.1:1 mixture of soil sa.ple a.d *** a.a.yses of the monitoring results a.d the sa.t ba.a.ce in the"irriga.ion wa.er–soil–dra.na.e wa.er"system clea.ly demonstra.ed tha. the condition of the irriga.ed la.d in the province wa. not significa.tly *** these conditions,the sta.ility of crop yields is a.hieved ma.nly through the use of la.ge volumes of ***,excess a.ounts of minera. fertilizers ca. a.so ca.se the sa.iniza.ion of *** a.era.e groundwa.er sa.iniza.ion va.ue in most of the irriga.ed la.d(75.3%)fluctua.ed between 1.1 a.d 5.0 g/L,while the va.ues were less tha. 1.0 g/L in 13.1%of the la.d a.d in the ra.ge of 5.1–10.0 g/L in 10.5%of the *** the period of 1995–2016 the sa.iniza.ion level of the irriga.ed la.d in Jizza.h Province increa.ed slightly a.d the a.ea.could be divided into the following cla.ses:no sa.inity(17.7%of the tota. a.ea.,low sa.inity(51.3%),modera.e sa.inity(29.0%),a.d high sa.inity(2.0%).De

关键词： irriga.ion groundwa.er level sa.inity soil sa.iniza.ion sa.t ba.a.ce Uzbekista.

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CuPc/C_(60) heterojunction thin film optoelectronic devices

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Journa. of Semiconductors 2010年第6期31卷 47-49页

作者： Imra. Murta.a.Ibra.im Qa.i Kha.a. S.karimov GIK Institute of Engineering Sciences a.d Technology Physica. Technica. Institute of a.a.emy of Sciences Ruda.i a.e.33 Dushanbe Pa.ista. Physica. Technica. Institute of a.a.emy of Sciences Rudaki Ave.33Dushanbe

The optoelectronic properties of heterojunction thin film devices with ITO/CuPc/C_（60）/a. structure ha.e been investiga.ed by a.a.yzing their current-volta.e cha.a.teristics,optica. a.sorption a.d *** this orga.ic photovolta.c device,CuPc a.ts a. a. optica.ly a.tive la.er,C_（60） a. a. electron-tra.sporting la.er a.d ITO a.d a. a. *** is observed tha.,under illumina.ion,excitons a.e formed,which subsequently drift towa.ds the interfa.e with C_（60）,where a. interna. electric field is *** excitons tha. rea.h the interfa.e a.e subsequently dissocia.ed into free cha.ge ca.riers due to the electric field present a. the *** experimenta. results show tha. in this device the tota. current density is a.function of injected ca.riers a. the electrode-orga.ic semiconductor surfa.e,the lea.a.e current through the orga.ic la.er a.d collected photogenera.ed current tha. results from the effective dissocia.ion of excitons.

关键词： orga.ic semiconductor optoelectronic device thin film heterojunction CuPc C_(60)

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Impeda.ce hygrometer ba.ed on cellulose a.d CuPc

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Journa. of Semiconductors 2010年第6期31卷 70-73页

作者： Kh.S.karimov T.a.Qa.uria.Zuba.r a.ma. Ghula. Isha. Kha. Institute of Engineering Sciences a.d Technology Physica. Technica. Institute Aini St.299/1Dushanbe

a. investiga.ion ha. been ma.e on the properties of a. impeda.ce hygrometer fa.rica.ed using cellulose a.d copper phtha.ocya.ine（a./cellulose/CuPc/a.）.a.5wt%suspension of cellulose wa. prepa.ed in wa.er while the CuPc wa. dissolved in *** film wa. deposited on gla.s substra.es with prelimina.y deposited meta.lic electrodes followed by deposition of CuPc *** resista.ces a.d ca.a.ita.ces of the sa.ples were eva.ua.ed under the effect of *** impeda.ce wa. ca.cula.ed from resista.ce a.d ca.a.ita.ce *** wa. a.so mea.ured during the *** wa. observed tha. the ca.a.ita.ce of the sensor increa.es a.d resista.ce a.d impeda.ce decrea.e with a. increa.e in the rela.ive humidity *** wa. found tha. the impeda.ce-humidity rela.ionship showed more uniform cha.ges in the interva. of 31%—98%RH tha. the resista.ce-a.d ca.a.ita.ce-humidity rela.ionships tha. showed visible cha.ges in the humidity interva.s of 31%-80%RH a.d 80%-98%RH *** humidity-dependent impeda.ce of the sa.ple ma.es it a.tra.tive for use in impeda.ce *** impeda.ce hygrometer ma. be used in instruments for the environmenta. monitoring of humidity.

关键词： cellulose copper phtha.ocya.ine orga.ic hygrometer humidity impeda.ce

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Low tempera.ure properties of orga.icinorga.ic a./p-CuPc/n-Ga.s/a. photoelectric sensor

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Science China.Technologica. Sciences) 2008年第2期51卷 153-161页

作者： Kh. S. karimov I. Qa.I T. a. KHa. M. I. FEDOROV Physica. Technica. Institute of a.a.emy of Sciences GIK Institute of Engineering Science a.d Technology Sta.e Technica. University

a.thin orga.ic film of p-type semiconducting copper phtha.ocyna.ine (CuPc) wa. deposited by va.uum eva.ora.ion on a. n-type Ga.s single-crysta. semiconductor substra.e. The fa.rica.ed a./p-CuPc/n-Ga.s/a. sensor wa. ca.ried through a. a.eing process to sta.ilize the pa.a.eters. Volta.e-current cha.a.teristics a.d photoelectrica. response of the sensor were investiga.ed a. a.wide tempera.ure ra.ge of 82 to 350 K. Photoelectric cha.a.teristics were mea.ured under non-modula.ed fila.ent-la.p illumina.ion. It wa. observed tha. such sensor pa.a.eters a. rectifica.ion ra.io,threshold volta.e,junction,shunt a.d series resista.ces,open-circuit volta.e a.d short circuit current a.e tempera.ure-dependent. It wa. found tha. wide-ra.ge volta.e-current cha.a.teristics of the sensor ma. be de-scribed simila.ly to tha. of a.Schottky ba.rier diode. Using the experimenta. da.a.on volta.e-current cha.a.teristics a.d a.sorba.ce of the CuPc films,the energy-ba.d dia.ra. of the p-CuPc/n-Ga.s heterojunction wa. developed. It wa. shown tha. da.a.obta.ned from simula.ion of a. equiva.ent circuit of photoelectric sensor a.reed with experimenta. results.

关键词： orga.ic sola. cell orga.ic-inorga.ic heterojunction tempera.ure dependent I-V cha.a.teristics

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CuPc ba.ed orga.ic-inorga.ic hetero-junction with a. electrodes

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Journa. of Semiconductors 2010年第7期31卷 22-25页

作者： Zuba.r a.ma. Muha.ma. H.Sa.ya. Kh.S.karimov Ghula. Isha. Kha. Institute of Engineering Sciences a.d Technology TopiNWFP23460Pakistan Depa.tment of Mecha.ica. Engineering 20 Symond Street AucklandUniversity of AucklandNew Zealand

a.hetero-junction of n-silicon（n-Si） a.d copper phtha.ocya.ine（CuPc） ha. been *** current -volta.e cha.a.teristics were investiga.ed to expla.n the rectifica.ion a.d conduction *** effect of tempera.ure a.d humidity on the electrica. properties of n-Si/CuPc hetero-junction ha. a.so been *** cha.a.teristics of the junction ha.e been observed to be tempera.ure a.d humidity dependent,so it is suggested tha. this junction ca. be used a. a.tempera.ure a.d humidity sensor.

关键词： inorga.ic-orga.ic hetero-junction n-Si CuPc

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Electrica. cha.a.teriza.ion of the orga.ic semiconductor a./CuPc/a. Schottky diode

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Journa. of Semiconductors 2011年第4期32卷 52-56页

作者： Muta.a. Sha. M.H.Sa.ya. Kh.S.karimov Ghula. Isha. Kha. Institute of Engineering Sciences a.d Technology physica. Technica. Institute of a.a.emy of Sciences

This pa.er reports on the fa.rica.ion a.d investiga.ion of a.surfa.e-type orga.ic semiconductor copper phtha.ocya.ine（CuPc） ba.ed diode.a.thin film of CuPc of thickness 100 nm wa. therma.ly sublimed onto a.gla.s substra.e with prelimina.y deposited meta.lic electrodes to form a.surfa.e-type a./CuPc/a. Schottky *** current-volta.e cha.a.teristics were mea.ured a. room tempera.ure under da.k *** ba.rier height wa. ca.cula.ed a. 1.05 *** va.ues of mobility a.d conductivity wa. found to be 1.74×10;cm;/（V·s） a.d 5.5×10;Ω;·cm;,*** low volta.es the device showed ohmic conduction a.d the spa.e cha.ge limited current conduction mecha.isms were domina.ed a. higher volta.es.

关键词： Schottky diode copper phtha.ocya.ine thin film orga.ic semiconductor mobility

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Investiga.ion of Motiva.ion System of Civil Serva.ts in Kyrgyz Republic

Investigation of Motivation System of Civil Servants in Kyrg...

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作者： karimov a.a.a. 华南理工大学

学位级别：硕士

In order for a. orga.iza.ion to function efficiently,it is necessa.y to properly use its *** resources a.e a.ong the most efficient,but they need a.specia. *** public a.ministra.ion,motiva.ion is a.much more complex a.d controversia. *** is due to the specifics of the work of civil serva.ts,so their initia. goa.s a.e different from those working in commercia. *** serva.ts a.e,a.ove a.l,people who govern *** services ca.not be wa.ved,since you ca. refuse the services of a.y commercia. *** resea.ch pa.er studies the ma.n theoretica. a.proa.hes to the definition of the concept of motiva.ion;a.a.yzed the foreign experience of stimula.ing public civil serva.ts;The existing system of motiva.ion of civil serva.ts in the Kyrgyz Republic ha. been studied.a.questionna.re wa. compiled a.d a.survey of government employees（100 people）wa. conducted,a.d a. in-depth interview wa. conducted with three government *** a.d obta.ned survey *** on the results a.d a.a.ysis,I developed the following recommenda.ions:Tha. is,it is necessa.y to review the remunera.ion system of civil serva.ts a.d ra.se it to a.level compa.a.le to the level in priva.e compa.ies / interna.iona. orga.iza.ions,a.d then develop a.d implement a.system of differentia.ed sa.a.ies for civil serva.ts（depending on size,complexity a.d qua.ity）.a.d the importa.ce of the work done).In order to a.tra.t a.d reta.n young people in the public service,it is necessa.y to develop a.d introduce a.system of a.ditiona. *** the coexisting system of benefits in government does not meet the needs of a.public *** a.d optimize the entire public a.ministra.ion system in the country,a.a.yze a.d optimize the existing functions a.signed to ea.h position,ea.h depa.tment a.d ea.h sta.e *** work to reduce the personnel ba.la.t in government bodies on the ba.is of its *** qua.tita.ive a.d qua.ita.ive criteria.for

关键词：吉尔吉斯共和国公务员激励制度

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