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Utilizing N-hydroxy-9-octadecenamide as a collector in flotation separation of bastnaesite and fluorite

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Journal of Rare Earths 2024年第8期42卷 1620-1628,I0008页

作者： Zhihao Guo Sultan ahmed khoso Mengjie Tian Wei Sun School of Minerals Processing and Bioengineering Central South UniversityChangsha410083China State Key Laboratory of Mineral Processing Beijing102600China Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources Wuhan430081China Key Laboratoryof Hunan Province for Cleanand Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha410083China Department of Mining Engineering Mehran University of Engineering&TechnologyJamshoro76062Pakistan

Bastnaesite((Ce,La,Pr,Nd)CO_(3)F) is a significant light rare earth mineral found in nature,known for its fine-grained *** is commonly employed for the recovery of fine-grained bastnaesite *** serve as an essential flotation reagent that enhance the surface hydrophobicity of target minerals.A novel collector,N-hydroxy-9-octadecenamide(N-OH-9-ODA),was synthesised in this study.N-OH-9-ODA exhibits superior selectivity compared to the traditional collector oleic acid in the flotation separation of bastnaesite and *** experimental and co mputational results indicate that N-OH-9-ODA exhibits superior selectivity due to its higher adsorption affinity for bastnaesite surface compared to fluorite *** zeta potential and the binding energies of the Ce 3d peaks in the X-ray photoelectron spectrum(XPS) of bastnaesite surface exhibit significant ***,fluorite surface demonstrates minimal alterations in its zeta potential and the binding energies of the Ca 2p peaks in its XPS after its interaction with N-OH-9-ODA.

关键词： Bastnaesite Collector Hydroxamic acids N-hydroxy-9-octadecenamide Oleic acid Rare earths

Low-complexity signal detection for massive MIMO systems via trace iterative method

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Journal of Systems Engineering and Electronics 2024年第3期35卷 549-557页

作者： IMRAN A.khoso ZHANG Xiaofei ABDUL Hayee Shaikh IHSAN A.khoso ZAHEER ahmed Dayo College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China School of Electrical Engineering Korea UniversitySeoul 02841Korea School of Mathematics South China University of TechnologyGuangzhou 510641China Department of Computer Science Huanggang Normal UniversityHuanggang 438000China

Linear minimum mean square error(MMSE)detection has been shown to achieve near-optimal performance for massive multiple-input multiple-output(MIMO)systems but inevitably involves complicated matrix inversion,which entails high *** avoid the exact matrix inversion,a considerable number of implicit and explicit approximate matrix inversion based detection methods is *** combining the advantages of both the explicit and the implicit matrix inversion,this paper introduces a new low-complexity signal detection ***,the relationship between implicit and explicit techniques is ***,an enhanced Newton iteration method is introduced to realize an approximate MMSE detection for massive MIMO uplink *** proposed improved Newton iteration significantly reduces the complexity of conventional Newton ***,its complexity is still high for higher ***,it is applied only for first two *** subsequent iterations,we propose a novel trace iterative method(TIM)based low-complexity algorithm,which has significantly lower complexity than higher Newton *** guarantees of the proposed detector are also *** simulations verify that the proposed detector exhibits significant performance enhancement over recently reported iterative detectors and achieves close-to-MMSE performance while retaining the low-complexity advantage for systems with hundreds of antennas.

关键词： signal detection low-complexity linear minimum mean square error(MMSE) massive multiple-input multiple-output(MIMO) trace iterative method(TIM)

Effect mechanism of nonane-1,1-bisphosphonic acid as an alternative collector in monazite flotation:Experimental and calculational studies

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Journal of Rare Earths 2022年第5期40卷 822-830,I0006页

作者： Zhao Cao Xu Wu Sultan ahmed khoso Wenbo Zhang Yuling Liu Mengjie Tian Jieliang Wang Institute of Mining Engineering Inner Mongolia University of Science and TechnologyBaotou 014010China School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha 410083China Department of Mining Engineering Mehran University of Engineering&TechnologyJamshoro 76062Pakistan Powder Metallurgy Research Institute Central South UniversityChangsha 410083China Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources Wuhan 430081China

Monazite((Ce,La)PO_(4))is one of the major types of light rare earth minerals from which the light rare earth elements cerium(Ce)and lanthanum(La)are economically *** is extensively used to recover fine-grained *** oleate(NaOL)is considered as the collector with strong collecting ability for monazite ***,this study shows that its collecting ability is still *** this paper,a phosphonic acid,nonane-1,1-bisphosphonic acid(C9-BPA),was employed as the novel collector in place of *** experiments show that even when the C9-BPA dosage is less than one-fifth of the NaOL dosage,the monazite recove ry using C9-BPA as the collector is approximately 22 wt%higher than that using *** mechanism by which C9-BPA adsorbs on monazite was investigated using zeta potential,infrared(IR)spectroscopy and X-ray photoelectron spectroscopy(XPS)measurements as well as first-principles *** potential measurements show a more significant decrease in the zeta potentials of monazite after the addition of C9-BPA compared to those after the addition of *** C9-BPA-treated monazite,the characteristic peaks of C9-BPA are observed in the IR and C 1 s XPS spectrum,whereas for monazite treated by NaOL,no characteristic peak of NaOL was *** results show that C9-BPA has a stronger affinity towards the monazite surface than NaOL as confirmed by the higher adsorption energy of CP-BPA on the monazite surface(-204.22 kJ/mol)than NaOL(-48.48 kJ/mol).This study demonstrates an extensive application value and prospect of C9-BPA in monazite flotation and helps design novel collectors with strong collecting ability for monazite flotation.

关键词： Nonane-1,1-bisphosphonic acid(C9-BPA) Monazite Flotation First-principles calculation Rare earths

An Effective Online Collaborative Training in Developing Listening Comprehension Skills

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Computer Systems Science & Engineering 2021年第8期38卷 131-140页

作者： Shakeel ahmed Munazza Ambreen muneer Ahmad Abdulellah A.Alaboudi Roobaea Alroobaea NZ Jhanjhi Department of Secondary Instructors Education Faculty of EducationAllama Iqbal Open UniversityIslamabadPakistan Department of Information Systems Faculty of Computer Science&ITUniversiti Malaya50603 Kuala LumpurMalaysia College of Computer Science Shaqra UniversitySaudi Arabia Department of Computer Science College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia School of Computer Science and Engineering SCETaylor’s UniversitySubang Jaya47500Malaysia

The COVID-19 outbreak severely affected formal face-to-face classroom teaching and ***-based online education and training can be a useful measure during the *** the Pakistani educational context,the use of ICT-based online training is generally sporadic and often unavailable,especially for developing English-language instructors’listening comprehension *** major factors affecting availability include insufficient IT resources and infrastructure,a lack of proper online training for speech and listening,instructors with inadequate academic backgrounds,and an unfavorable environment for ICT-based training for listening *** study evaluated the effectiveness of ICT-based training for developing secondary-level English-language instructors’listening comprehension *** this end,collaborative online training was undertaken using random ***,60 private-school instructors in Chakwal District,Pakistan,were randomly selected to receive online-listening training sessions using English *** experimental group achieved significant scores in the posttest ***,there were substantial improvements in the participants’listening skills via online *** the unavailability of face-to-face learning during COVID-19,this study recommends using ICT-based online training to enhance listening comprehension *** policymakers should revise curricula based on online teaching methods and modules.

关键词： COVID-19 online training remote teaching computers in education listening comprehension English language

Residual effects of tobacco biochar along with different fixing agents on stabilization of trace elements in multi-metal contaminated soils

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Journal of Environmental Sciences 2020年第1期32卷 299-309页

作者： Altaf Hussain Lahori Monika Mierzwa-Hersztek Muhammad Rashid Shahmir Ali Kalhoro Mehrunisa Memon Zobia Naheed muneer ahmed Zengqiang Zhang College of Natural Resources and Environment Northwest A&F UniversityYanglingShannxi 712100China Department of Environmental Sciences Sindh Madressatul Islam UniversityKarachiPakistan Department of Agricultural and Environmental Chemistry University of Agriculture in KrakowalMickieivicza 2131-120KrakowPoland Faculty of Agriculture Lasbela University of AgricultureWater and Marine SciencesUthal 90150Pakistan Department of Soil Science Sindh Agriculture UniversityTandojamPakistan Agriculture Research Station BaffaMansehraKhyber PakhtunkhwaPakistan

The residual effect of tobacco biochar(TB≥500°C)mono and co-application with Cahydroxide(CH),Ca-bentonite(CB)and natural zeolite(NZ)on the bio-availability of trace elements TE(s)in alkaline soils has not been deeply studied yet.A pot study that had earlier been investigated TB mono and blended with CH,CB and NZ on the immobilization of Pb,Cu Cd,and Zn by Chinese *** crop in the rotation was selected as test plant to assess the residual impact of amendments on stabilization of Pb,Cu Cd,and Zn in mine polluted(M-P),smelter heavily and low polluted(S-HP and S-LP,respectively)*** obtained results showed that stabilization of Pb,Cd,Cu and Zn reached 63.84% with TB+CB,61.19% with TB+CH,83.31% with TB+CH and 35.27% with TB+CH for M-P soil,36.46% with TB+NZ,38.46% with TB+NZ,19.40% with TB+CH and 62.43% with TB+CH for S-LP soil,52.94%TB+NZ,57.65% with TB+NZ,52.94% with TB+NZ,and 28.44% with TB+CH for S-LP ***,TB+CH and TB alone had mobilized Pb and Zn up to19.29% and 34.96% in M-P *** mobility of Zn reached 8.38% with TB+CB and 66.03% with TB for S-HP and S-LP *** uptake and accumulation of Pb,Cd,Cu and Zn in shoot and root were reduced in three polluted ***,the combination of TB along with CH,CB and NZ has been proven to be effective in Pb,Cd,Cu and Zn polluted mine/smelter soils restoration.

关键词： Tobacco biochar Residual effect Trace elements stabilization Maize Soil remediation

Neurobrucellosis in children

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Asian Pacific Journal of Tropical Biomedicine 2015年第2期5卷 158-161页

作者： Mohamed Ata Hendaus Rasha muneer Qaqish ahmed Hassan Alhammadi Department of Pediatrics.Hamad Medical Corporation

Neurobrucellosis is a complication of brucellosis,which is considered endemic in the Indian subcontinent,Arabian Peninsula and Mediterranean *** reaches the central nervous system via hematogenous spread in the infected human being,or through *** can present with any neurological symptoms,hence,the index of suspicion must be high enough to make proper *** fluid studies are usually diagnostic,while imagings including magnetic resonance imaging and computed tomography are of little *** for therapy,a combination of antibiotics must be administered with a goal to reduce relapse or avoid *** duration of treatment should be tailored as per clinical signs and symptoms until the cerebrospinal fluid components return to normal,which might be up to six *** this article,we present an overall view of current understanding of neurobrucellosis in children,its epidemiology,clinical features,diagnostictests,and management options.

关键词： Children Brucella Neuro

Histological Features of Parotid Gland of Albino Rats Exposed to. Smokeless Tobacco

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Journal of Northeast Agricultural University(English Edition) 2016年第3期23卷 54-60页

作者： Sana Murtaza khoso Pervez ahmed khoso Navaid Qazi Mir Hassan khoso ahmed Sultan Jatoi Ubedullah Kaka Dental College Isra University Hyderabad Sindh Pakistan College of Veterinary Medicine Northeast Agricultural University Harbin 150030 China Shaheed Benazir Bhutto University of Veterinary and Animal Sciences Sakrand Biopharmaceutical Lab College of Life Sciences Northeast Agricultural University Harbin 150030 China

Smokeless tobacco is very common personal habit of people living in various areas of Asia which is an alarming sign for the development of different oral diseases in such people. The aim of present study was to investigate effects of smokeless tobacco on parofid glands of the Aalbano rats by using various percentages of the smokeless tobacco. The rats were divided into three different groups, control group （A） no smokeless tobacco, experimental group （B） 5% smokeless tobacco and experimental group （C） 10% of smokeless tobacco with different feeds required according parameters. Weekly weight gain and partid gland were analyzed through student P test and histological structures were recorded through HE stain and Retculin stain. The results showed that as compared to control group body, weight of the rats was decreased in groups B and C having smokeless tobacco percentage in the diet. Weight of parotid gland as compared to control group was decreased in groups B and C with diet of smokeless tobacco. Further, histological observation under HE stain showed that parofid gland of group B showed mild narrowing of ductal lumen, collapse of vessels and stromal was also increased, in group C parenchyrnal tissues with loss of acini found damaged and glandular dystrop and lymphatic infiltration were determined moderate to severe. Meanwhile, reticulin stain showed that vascular collapses were shown because of increasing in stromal glandular atrophy in group C as compared to control group. In conclusion, this study showed that smokeless tobacco caused serious injuries in the tissue level in parotid gland with high percentage of smokeless tobacco which highlight health hazards on its consumption.

关键词： smokeless tobacco histological observation parotid gland Albino rat

Effect of Storage Temperature and Periods on Some Characteristics of Wheat Flour Quality

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Food and Nutrition Sciences 2015年第12期6卷 1148-1159页

作者： muneer Saif Hasan ahmed University of Mysore Mysore India

A laboratory experiment has been designed and implemented to study the effects of storage temperatures (27.5°C and 37.5°C) and storage periods (day, 3 days, 10 days, 20 days and 30 days) in normal conditions and relative humidity on the characteristics of wheat flour quality, as well as some of the chemical characteristics of flour (moisture content and ratio of wet gluten), the physical properties (color and falling number). Increasing the storage temperature from 27.5°C to 37.5°C has led to decreasing moisture content of flour stored under storage relative humidity of 38% - 70%. It has also resulted in extending the storage period from 1 day to 10 days to a decrease in moisture content of flour, and this decline has increased the storage period up to thirty days. The overlap between these two factors has been significantly affective. As the storage temperature of flour increased from 27.5°C to 37.5°C, the percentage of wet gluten has been increased too, and the storage period was extended to ten days. This has led to a significant increase in the percentage of wet gluten flour. In addition, there was a significant response to the effective overlap between the storage temperatures and periods of storage under study in this manner. Increasing the storage temperature from 27.5°C to 37.5°C has led to significantly increased values of the color of the stored flour. Besides, increasing the storage period one day more has led to decreasing the values of the color of the stored flour. However, there has been no significant change to the subsequent periods of storage. The overlap between both factors of temperature and storage periods has a significant effect on the flour color. There has been a significant decrease of the enzyme activity (the height values of the falling No.). But there is a noticeable increase to the falling No. values of the stored flour by 37.5°C when increasing the storage periods from one day to ten days and thirty days. This effect, nonetheless, has

关键词： Wheat Flour Bread Storage Time Temperature Storage Color Falling Number Wet Gluten Moisture Relative Humidity

Effect of Mineral and Vitamin Supplementation on Performance and Haemotological Values in Broilers

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Journal of Northeast Agricultural University(English Edition) 2018年第1期25卷 33-39页

作者： Pervez ahmed khoso Aziz ahmed Memon Ali Asghar Baloch Ali Raza Mangi Zafar Ali khoso Department of Veterinary Medicine Shaheed Benazir Bhutto University of Veterinary and Animal Sciences Sakrand Department of Poultry Husbandry Sindh Agricultural University Department of Veterinary Pathology Shaheed Benazir Bhutto University of Veterinary and Animal Sciences Sakrand Department of Veterinary Anatomy and Histology Shaheed Benazir Bhutto University of Veterinary and Animal Sciences Sakrand Department of Animal Breeding Shaheed Benazir Bhutto University of Veterinary and Animal Sciences Sakrand

A total of 120-day-old broilers were divided into four groups. In group-A, broilers were left without supplementation of minerals and vitamins(control), while the broilers in groups B, C and D were given mineral and vitamin supplementation 1-6, 1-4 and 5-6 weeks, respectively. The results showed that the feed consumption of broilers in groups A, B, C and D was 4 234.61, 4 028.38, 4 169.32 and 4 181.87 g · b-1; water intake was 9 668.88, 9 295.55, 9 882.11 and 9 402.86 L · b-1; live body weight was 2 068.90, 2 360.90, 2 255.30 and 2 157.40 g · b-1, respectively. The feed conversion ratio of broilers in groups A, B, C, D was 2.05, 1.71, 1.85 and 1.94 g · b-1, carcass weight(wt) was 1 550, 1 656, 1 552 and 1 528.8 g · b-1, and average dressing percentage was 61.24, 63.02, 62.60 and 60.51 respectively. Weight of heart in groups A, B, C and D was 15.13, 13.16, 11.72 and 11.50 g · b-1, weight of gizzard was 32.98, 37.48, 37.62 and 33.35 g · b-1, weight of liver was 51.94, 48.70, 51.94 and 48.70 g · b-1 and spleen weight was 3.48, 3.28, 3.06 and 2.82 g · b-1, respectively. Average mortality of broilers in groups A, B, C and D was 6, 2, 4 and 5 resulting 20.00%, 8.00%, 13.00% and 16.00% mortality rate, respectively. The haemoglobin level in blood of broilers in groups A, B, C and D was 9.20, 12.23, 10.87 and 7.60 g · dL-1,white blood cell level 77.47, 89.83, 81.63 and 78.13(×106 μL); red blood cell level 1.85, 2.58, 2.45 and 1.40(×106 μL), respectively. It was concluded that broilers given mineral and vitamin supplementation(Aquavit Electrolyte) for 6 weeks were proven to be most effective regime to result the lowest feed intake, the highest live body weight, better feed conversion ratio, higher carcass weight, better dressing percentage, higher net profit, relatively improved haemoglobin level in blood, increased counts of red blood cells and white blood cells. In all the above parameters, the broilers received mineral and vitamin supplementation for the first 4 weeks and

关键词： mineral vitamin performance haemotology broiler