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Mobilization and Acquisition of Sparingly Soluble P-Sources by Brassica Cultivars under P-Starved Environment I. Differential Growth Response,P-Efficiency Characteristics and P-Remobilization

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Journal of Integrative Plant Biology 2009年第11期51卷 1008-1023页

作者： muhammad shahbaz akhtar Yoko Oki Tadashi Adachi Department of Environmental Management Engineering Faculty of Environmental Science and TechnologyThe Graduate School of Environmental ScienceOkayama University

Phosphorus （P） starvation is highly notorious for limiting plant growth around the globe. To combat P-starvation, plants constantly sense the changes in their environment, and elicit an elegant myriad of plastic responses and rescue strategies to enhance P-solublization and acquisition from bound soil P-forms. Relative growth responses, P-solublization and P- acquisition ability of 14 diverse Brassica cultivars grown with sparingly soluble P-sources （Rock-P （RP） and Ca3（PO4）2 （TCP）） were evaluated in a solution culture experiment. Cultivars showed considerable genetic diversity in terms of biomass accumulation, concentration and contents of P and Ca in shoots and roots, P-stress factor （PSF） and P use efficiency. Cultivars showed variable P-stress tolerance, and cultivars depicting low PSF and high P-efficiency values were better adaptable to P-starvation. In experiment 2, after initial feeding on optimum nutrition for 12 d after transplanting （DAT）, class-I （low P-tolerant （Oscar and Con-II）） and class-II （low P-sensitive （Gold Rush and RL-18）） cultivars were exposed to P-free environment for 25 d. All of the cultivars remobilized P from above ground parts to their roots during growth in P-free environment, the magnitude of which was variable in tested cultivars. P-concentrations （[P]s） at 37 DAT were higher in developing compared with developed leaves. Translocation of absorbed P from metabolically inactive to active sites in P- stressed plants may have helped class-I cultivars to establish a better rooting system, which provided a basis for enhanced P-utilization efficiency （PUE） and tolerance against P-stress. By supplying TCP and RP spatially separated from other nutrients in split root study, class-I cultivars were still able to mobilize RP and TCP more efficiently compared with class-II cultivars. To compare the growth behavior under P-stress, cultivars were grown in pots for 41 d after sowing, using a soil low in P （NaHCO3-extractable P = 3.97 mg/kg, Mehlich

关键词： Brassica Ca3(PO4)2 P-remobilization P-stress P-use efficiency P-stress factor rock phosphate.

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A novel medical image data protection scheme for smart healthcare system

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CAAI Transactions on Intelligence Technology 2024年第4期9卷 821-836页

作者： Mujeeb Ur Rehman Arslan Shafique muhammad shahbaz Khan Maha Driss Wadii Boulila Yazeed Yasin Ghadi Suresh Babu Changalasetty Majed Alhaisoni Jawad Ahmad School of Computer Science and Informatics Cyber Technology InstituteDe Montfort UniversityLeicesterUK Department of Biomedical Engineering University of GlasgowGlasgowUK School of Computing Engineering and the Built EnvironmentEdinburgh Napier UniversityEdinburghUK Robotics and Internet‐of‐Things Laboratory Prince Sultan UniversityRiyadhSaudi Arabia Department of Computer Science Al Ain UniversityAl AinUnited Arab Emirates Department of Computer Engineering College of Computer Science King Khalid UniversityAbhaSaudi Arabia Computer Sciences Department College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadhSaudi Arabia

The Internet of Multimedia Things(IoMT)refers to a network of interconnected multimedia devices that communicate with each other over the ***,smart healthcare has emerged as a significant application of the IoMT,particularly in the context of knowledge‐based learning *** healthcare systems leverage knowledge‐based learning to become more context‐aware,adaptable,and auditable while maintain-ing the ability to learn from historical *** smart healthcare systems,devices capture images,such as X‐rays,Magnetic Resonance *** security and integrity of these images are crucial for the databases used in knowledge‐based learning systems to foster structured decision‐making and enhance the learning abilities of ***,in knowledge‐driven systems,the storage and transmission of HD medical images exert a burden on the limited bandwidth of the communication channel,leading to data trans-mission *** address the security and latency concerns,this paper presents a lightweight medical image encryption scheme utilising bit‐plane decomposition and chaos *** results of the experiment yield entropy,energy,and correlation values of 7.999,0.0156,and 0.0001,*** validates the effectiveness of the encryption system proposed in this paper,which offers high‐quality encryption,a large key space,key sensitivity,and resistance to statistical attacks.

关键词： data analysis medical image processing security

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Flexible perovskite light-emitting diodes for display applications and beyond

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Journal of Semiconductors 2024年第5期45卷 8-25页

作者： Yongqi Zhang shahbaz Ahmed Khan Dongxiang Luo Guijun Li Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Huangpu Hydrogen Innovation Center/Guangzhou Key Laboratory for Clean Energy and Materials School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China

The flexible perovskite light-emitting diodes(FPeLEDs),which can be expediently integrated to portable and wearable devices,have shown great potential in various *** FPeLEDs inherit the unique optical properties of metal halide perovskites,such as tunable bandgap,narrow emission linewidth,high photoluminescence quantum yield,and particularly,the soft nature of *** present,substantial efforts have been made for FPeLEDs with encouraging external quantum efficiency(EQE)of 24.5%.Herein,we summarize the recent progress in FPeLEDs,focusing on the strategy developed for perovskite emission layers and flexible electrodes to facilitate the optoelectrical and mechanical *** addition,we present relevant applications of FPeLEDs in displays and ***,perspective toward the future development and applications of flexible PeLEDs are also discussed.

关键词： metal halide perovskite flexible light-emitting diodes optical properties mechanical flexibility display

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青蒿琥酯联合用药及作用机制研究进展

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中国实验方剂学杂志 2024年第3期30卷 290-298页

作者：张雨婷 muhammad shahbaz 张蕊王变利张会敏山东中医药大学药学院济南250355 山东省中医药研究院国家中医药管理局济南250014 山东大学附属齐鲁医院济南250012 山东大学基础医学院济南250100 山东省东营同安胸外科医院东营257300

青蒿素是一种从菊科蒿属植物黄花蒿(Artemisia annua)中分离出来的倍半萜类天然产物,青蒿琥酯(artesunate)是其衍生物之一,具有经济、速效、低毒、不易产生耐受等特点。目前临床主要用于脑型疟疾及各种重症疟疾的抢救,对疟原虫红内期有... 详细信息

青蒿素是一种从菊科蒿属植物黄花蒿(Artemisia annua)中分离出来的倍半萜类天然产物,青蒿琥酯(artesunate)是其衍生物之一,具有经济、速效、低毒、不易产生耐受等特点。目前临床主要用于脑型疟疾及各种重症疟疾的抢救,对疟原虫红内期有强大且快速杀灭的作用,能够迅速控制临床发作及症状。除此之外,青蒿琥酯还具有抗肿瘤、抗病毒、抗肝纤维化、抗炎、抗菌、保护肝细胞、免疫调节等药理作用,抑制细胞增殖、诱导细胞凋亡及下调血症水平。以青蒿素类化合物为基础的联合疗法(ACTs)是多国治疗疟疾的一线方法,主要包括蒿甲醚-本芴醇、青蒿琥酯-阿莫地喹和青蒿甲醚-苯甲酰胺等。近年来国内外学者对青蒿琥酯进行了研究,发现相对于单一疗法而言,青蒿琥酯联合疗法在增强药理作用、缩短用药时长和减少不良反应等方面更具有优越性。该文通过Web of Science核心合集(Web of Science Core Collection)系统检索并通过CiteSpace(6.2.1)软件对其进行整合,综述了近5年来青蒿琥酯联合其他药物在抗疟、抗肿瘤、抗菌和抗病毒等方面的作用机制并对其进行阐述,旨在为进一步合理开发利用青蒿琥酯及新药研发提供一定的理论依据。

关键词：青蒿琥酯联合疗法作用机制抗疟抗肿瘤

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Chinese New Year:A Celebration of Culture and Unity

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China Today 2024年第2期73卷 39-41页

作者： shahbaz KHAN UNESCO Regional Office for East Asia

Many countries list the Spring Festival as a national holiday,and about one-fifth of humanity celebrates this festival in various *** Chinese New Year,also known as the Spring Festival,is a time-honored social and cultural tradition that has been celebrated for thousands of *** is a festival that not only marks the inception of a new year in Chinese lunar calendar,but also acts as a symbolic bridge to connect individuals from different cultures and backgrounds.

关键词： Unity symbolic festival

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The Influence of Depression on Different Age and Gender Groups in Bahawalpur

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Journal of Clinical and Nursing Research 2024年第7期8卷 196-207页

作者： Mehran Khan muhammad shahbaz Tooba Waris Shoaib Yaseen Iqra Afzal Emaan Khadim Sawera Usman muhammad Ismail Shah Sulaiman Aslam Zafar Iqbal Bahawalpur College of Pharmacy BMDC Complex63100PunjabPakistan

In Bahawalpur,a cross-sectional study assessed depression prevalence across age and gender groups,involving 442 participants from diverse socioeconomic backgrounds and *** the PHQ9 questionnaire,84%were found to meet depression *** findings revealed a higher incidence in females(88%)than males(79%),with the greatest disparity among young adults,particularly young women,due to factors like academic pressure and financial *** children had the lowest depression rates(68%),possibly due to better *** individuals exhibited more severe depression,likely related to aging and domestic *** study’s findings highlight a significant variation in depression severity across different demographic groups,with an overall higher incidence in *** research underscores the necessity for targeted mental health resources and interventions tailored to the specific needs of each demographic *** also points to the importance of addressing academic and socioeconomic stressors to mitigate depression,particularly among young *** the study provides valuable insights,it relies on self-reported data,which may introduce ***,future research should include clinical assessments to validate these findings and ensure a more accurate representation of depression within the community.

关键词： Influence Depression Different age Gender groups Bahawalpur

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Efficient Process Monitoring Under General Weibull Distribution

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Computer Systems Science & Engineering 2022年第1期40卷 287-297页

作者： Saman Hanif shahbaz muhammad Qaiser shahbaz Department of Statistics King Abdulaziz UniversityJeddahKingdom of Saudi Arabia

Product testing is a key ingredient in maintaining the quality of a pro-duction *** production process is considered an efficient process if it is capable of quick identification of faulty *** items produced by any production process are usually packed and acceptance or rejection of the pack depends upon its conformity to some specified quality ***,the specified quality level is based upon the number of defective items found in the inspected number of *** decisions are based upon some rules and usually acceptance of the pack is based upon a fewer number of defective items in the *** questions can be answered by using acceptance sampling *** acceptance sampling plans assume the fact that the quality level of the item follows some probability *** sampling plans based upon some classical probability distributions are available but often it happens that the quality behavior of the product does not follow a simple probability model and hence the available sampling plans *** this paper,we have developed acceptance sampling plans when the product life follows a general Weibull *** sampling plans have been constructed by considering the crisp and fuzzy behavior of the acceptance *** sampling plans have been constructed by assuming an infinite lot *** has been found that the number of items required for inspection decreases with an increase in some parameters.

关键词： General Weibull distribution sampling plans acceptance probability fuzzy plan

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Climatic regionalization mapping of the Murrumbidgee Irrigation Area,Australia

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Progress in Natural Science:Materials International 2009年第12期19卷 1773-1779页

作者： shahbaz Khan akhtar Abbas Tariq Rana Sustainable Water Resources Development and Management Section Division of Water SciencesUNESCOIrue Miollis 75015 ParisFrance CSIRO Land and Water University CanberraACTAustralia Murray Darling Basin Authority CanberraACTAustralia

In this study,spatial analysis techniques were used to generate climatic zoning maps of the East Murrumbidgee Irrigation Area(MIA), *** term climate data were used to analyze and assess regional climatic variation by cluster analysis in a GIS environment. Based on thermal and moisture factors,four variables were chosen to develop climate *** variables include annual average rainfalls, annual average ETc,annual average Growing Day Degree(GDD) and daily average temperature generated from daily climate data of 36 years(1971-2006) on 12 local weather stations as the fundamental elements of regional climate ***-based spatial analysis models are used to map climate sub-regions from sets of climatic parameters derived from regional climate data *** climate zoning schemes are presented by integration of spatial interpolation,spatial cluster analysis and climate indices *** scheme comes with the two climate zones of the West and the East based on spatial cluster analysis according to selected climatic variables, and the other comes with the three comprehensive hydro-thermal zones and the six hydro-thermal balance zones.

关键词： Agro-climatic regionalization Regional climatic variation Climatic zone mapping Murrumbidgee Irrigation Area GIS

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Intraspecific Variations of Phosphorus Absorption and Remobilization, P Forms, and Their Internal Buffering in Brassica Cultivars Exposed to a P-Stressed Environment

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Journal of Integrative Plant Biology 2008年第6期50卷 703-716页

作者： M. shahbaz akhtar Yoko Oki Tadashi Adachi Department of Environmental Management Engineering Faculty of Environmental Science and Technology Graduate School of Environmental Science Okayama University CADGK and Institute of Soil and Environmental Sciences University of Agriculture Faisalabad Pakistan

Translocation of absorbed phosphorus （P） from metabolically inactive sites to active sites in plants growing under P deprivation may increase its P utilization efficiency （PUE）. Acclimation to phosphate （Pi） starvation may be caused by a differential storage pool of vacuolar P, its release, and the intensity of re-translocation of absorbed P as P starvation inducible environmental cues （PSlEC） from ambient environment. Biomass assay and three P forms, namely inorganic （Pi）, organic （Po）, and acid-soluble total （Ptas） were estimated in Brassica cultivars exposed to 10 d P deprivation in the culture media. Considering that -aPi/at denotes the rate of Pi release, Pi release velocity （RSPi） was determined as the tangent to the equations obtained for Pi f（t） at the mean point in the period of greatest Pi decrease, whereas the inverse of the RSPi was an estimate of the internal Pi buffering capacity （IBCPi）. Inter cultivar variations in size of the non-metabolic Pi pool, RSPi, re-translocation of Pi from less to more active metabolic sites, and preferential Pi source and sink compartments were evaluated under P starvation. The cultivar ＇Brown Raya＇ showed the highest Pi storage ability under adequate external P supply, and a more intensive release than ＇Rain Bow＇ and ＇Dunkled＇ under P stress. Cultivar ＇B.S.A＇ was inferior to ＇Con-l＇ in its ability to store and use Pi. Roots and upper leaves were the main sink of Pi stored in the lower and middle leaves of all cultivars and showed lower IBCPi and larger RSPi values than lower and middle leaves. In another trial, six cultivars were exposed to P-free nutrition for 29 d after initial feeding on optimum nutrition for 15 d. With variable magnitude, all of the cultivars re-translocatad P from the above ground parts to their roots under P starvation, and [P] at 44 d after transplanting was higher in developing leaves compared with developed leaves. Under P deprivation, translocation of absorbed P from metabolically inactive to ac

关键词： Brassica internal Pi buffering capacity P absorption and remobilization Pi homeostasis Pi release velocity vacuolar P

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Bivariate Beta–Inverse Weibull Distribution:Theory and Applications

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Computer Systems Science & Engineering 2021年第1期36卷 83-100页

作者： Ali Algarni muhammad Qaiser shahbaz Department of Statistics Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia

Probability distributions have been in use for modeling of random phenomenon in various areas of *** of probability distributions has been the area of interest of several authors in the recent *** situations arise where joint modeling of two random phenomenon is *** such cases the bivariate distributions are *** of the bivariate distributions necessitates certain conditions,in a field where few work has been *** paper deals with a bivariate beta-inverse Weibull *** marginal and conditional distributions from the proposed distribution have been *** for the joint and conditional density functions for the proposed distribution have been *** properties,including product,marginal and conditional moments,joint moment generating function and joint hazard rate function of the proposed bivariate distribution have been *** study for the dependence function has been implemented to see the effect of various parameters on the dependence of *** of the parameters of the proposed bivariate distribution has been done by using the maximum likelihood method of *** and real data application of the distribution are presented.

关键词： Bivariate beta distribution inverse Weibull distribution conditional moments maximum likelihood estimation

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