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Effect of organic component(tartrate) addition on cerium nitrate's ability to inhibit corrosion of mild steel in NaCl solution

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Journal of Rare Earths 2024年第10期42卷 1995-2002页

作者： Minak.hi k.undal Chhaya Sharma A.k.Singh Department of Applied Science and Engineering Indian Institute of Technology RoorkeeSaharanpur CampusSaharanpurU.247001India Department of Pulp and Paper Technology Indian Institute of Technology Roork. Saharanpur CampusSaharanpurU.p247001India

Cerium tartrate(CeTar),produced in this study by precipitating cerium nitrate with potassium sodium tartrate(k.aTar),was examined as a corrosion *** loss tests show inhibition efficiency of 71.7% with Ce(NO_(3))_(3) and 88.7% with CeTar inhibitor for one-month exposure to mild steel in 7 g/L NaCl *** inhibition efficiency drops to 28.6% with the fo rmer and remains around 8 7% with the latter inhibitor after six months of *** results from electrochemical testing indicate that the inhibition efficiency decreases by adding cerium ***,the cerium tartrate inhibitor demonstrates a nearly constant inhibition efficiency for up to 30 d,i.e.,≈90%.Electrochemical impedance spectroscopy(EIS) performed in these cases shows the following results:(ⅰ) with cerium nitrate,a film of iron and cerium oxide,which on prolonged exposure diminishes,and(ⅱ) with cerium tartrate,the formation of a bimetallic film(Fe-tartrate-Ce) and a mixture of cerium hydroxide and iro n oxide that protects steel for a longer *** inferences are based on the analyses of scanning electron microscopy/energydispersive X-ray analysis(SEM/EDAX),X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron(XPS),and Raman spectroscopy results.

关键词： Cerium tartrate Cerium nitrate Corrosion inhibition Mild steel Inhibitor film characterization Rare earths

A new route to weak.force sensing beyond SQL:Squeezed magnons in cavity magnomechanics

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Science China(Physics,Mechanics & Astronomy) 2024年第10期67卷 166-167页

作者： S.k.Özdemir Department of Engineering Science and Mechanics and Materials Research Institute(MRI)The Pennsylvania State UniversityUniversity ParkPA 16802USA

Quantum mechanics imposes limits on measurement accuracy through quantum noise which typically has two components:First is the shot noise originating from vacuum fluctuations and referred to as the imprecision *** is ... 详细信息

关键词： quantum typically vacuum

Hybrid Prairie Dog and Beluga Whale Optimization Algorithm for Multi-Objective Load Balanced-Task.Scheduling in Cloud Computing Environments

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China Communications 2024年第7期21卷 307-324页

作者： k.Ramya Senthilselvi Ayothi Department of Computer Science and Engineering SRM Institute of Science and TechnologyRamapuramChennaiTamil Nadu 600089India

The cloud computing technology is utilized for achieving resource utilization of remotebased virtual computer to facilitate the consumers with rapid and accurate massive data *** utilizes on-demand resource provisioning,but the necessitated constraints of rapid turnaround time,minimal execution cost,high rate of resource utilization and limited mak.span transforms the Load Balancing(LB)process-based Task.Scheduling(TS)problem into an NP-hard optimization *** this paper,Hybrid Prairie Dog and Beluga Whale Optimization Algorithm(HPDBWOA)is propounded for precise mapping of task. to virtual machines with the due objective of addressing the dynamic nature of cloud *** capability of HPDBWOA helps in decreasing the SLA violations and Mak.span with optimal resource *** is modelled as a scheduling strategy which utilizes the merits of PDOA and BWOA for attaining reactive decisions mak.ng with respect to the process of assigning the task. to virtual resources by considering their priorities into *** addresses the problem of pre-convergence with wellbalanced exploration and exploitation to attain necessitated Quality of Service(QoS)for minimizing the waiting time incurred during TS *** further balanced exploration and exploitation rates for reducing the mak.span during the task.allocation with complete awareness of VM *** results of the proposed HPDBWOA confirmed minimized energy utilization of 32.18% and reduced cost of 28.94% better than approaches used for *** statistical investigation of the proposed HPDBWOA conducted using ANOVA confirmed its efficacy over the benchmark.d systems in terms of throughput,system,and response time.

关键词： Beluga Whale Optimization Algorithm(BWOA) cloud computing Improved Hopcroft-k.rp algorithm Infrastructure as a Service(IaaS) Prairie Dog Optimization Algorithm(PDOA) Virtual Machine(VM)

Aggresome-aggrephagy transition process:geting closer to the functional roles of HDAC6 and BAG3

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Neural Regeneration Research 2024年第6期19卷 1181-1182页

作者： Hagen k.rschgen Christian Behl The Autophagy Lab Institute of PathobiochemistryUniversity Medical Center of the Johannes Gutenberg University MainzMainzGermany

Misfolding of proteins as well as their aggregation is a major driver of age-related neurodegenerative ***,cells have evolved sophisticated protein quality control *** the ubiquitin-proteasome-system(UPS)and the autop... 详细信息

关键词： closer system transition

Navigating Mark.t Choices: Understanding Carrot Mark.t Outlet Selection among Smallholder Farmers in k.nya

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Agricultural Sciences 2024年第6期15卷 676-703页

作者： Hillary k.protich Ngeno Ngenoh Evans Oscar Ayuya Ingasia Hillary k. Bett State Department for Crop Development and Agricultural Research Ministry of Agriculture Livestock Fisheries and Cooperatives Nairobi Kenya Department of Agricultural Economics and Agribusiness Management Egerton University Egerton Kenya Brook.yn Economic Consulting Limited Nairobi Kenya

This research delves into the hurdles and strategies aimed at augmenting the mark.t involvement of smallholder carrot farmers in Nak.ru County, k.nya. Employing a Multinomial Logit (MNL) model, it scrutinizes the factors influencing the selection of mark.ting outlets among carrot farmers. The findings unveil that a significant majority (81%) of surveyed farmers actively participate in diverse mark.t outlets, encompassing the farm gate, cleaning point, local mark.t, external mark.t, and export mark.t. Notably, pivotal buyers include aggregators, brok.rs, wholesalers, retailers, and consumers, with transactions predominantly occurring at the farm level. Additionally, the analysis discerns substantial influences of socio-economic characteristics, experiential factors, and geographical proximity on farmers’ choices of mark.t outlets. Specifically, gender, age, land size, farming experience, and distance to mark.ts emerge as critical determinants. Moreover, the study delves into the examination of mark.t margins along the carrot value chain, shedding light on the potential profitability of carrot farming in the region. Remark.bly, higher average gross margins are identified in export and external mark.ts, signaling lucrative prospects for farmers targeting these segments. However, disparities in profit distribution between farmers and traders underscore the necessity for interventions to ensure equitable value distribution throughout the value chain. These findings underscore the imperative for tailored interventions to tack.e challenges and foster inclusive agricultural development. Strategies such as farmer organizations, contracting, and vertical integration are advocated to enhance mark.t access and profitability for smallholder carrot farmers. Thus, this study enriches our comprehension of the dynamics within carrot value chains and provides valuable insights for policymak.rs and development practitioners aiming to uplift rural livelihoods and bolster food security.

关键词： Mark.t Outlet Selection Smallholder Farmers Multinomial Logit Model Determinants Carrot Value Chain

One-Pot Green Synthesis of 1, 4-Dihydropyridine Derivatives Using Polyindole TiO2 Nanocatalyst by Solvent Free Method

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Open Journal of Composite Materials 2024年第3期14卷 109-123页

作者： Deepak.Babasaheb Phasage Sanjay k. Sharma Balram Tripathi Sonia Chahar Srivastava Department of Chemistry JECRC University Jaipur India S. S. Jain Subodh PG College Jaipur India

This study used a Polyindole in combination with TiO2 nanocatalyst as an efficient heterogeneous catalyst to carry out a multi-component Hantzsch reaction involving different aromatic aldehydes with methyl acetoacetate, and aqueous ammonium to create 1,4-dihydropyridine derivatives under solvent free condition at ambient temperature. A broad range of aldehydes and methyl acetoacetates, ranging from heteroaromatic to polyaromatic one, with high level of functional group tolerance can be used to provide the desired products possessing relevant medicinal moiety in high yields. This technology has prospective advantages over current protocols, including the utilization of a cheap, stable, recyclable, and safe catalyst, quick.r reaction times with higher yields and simple product isolation.

关键词： TiO2 Nanocatalyst Green Synthesis Surface Morphology

Quantification of Structurally Alert Mutagenic Impurities in Meropenem Trihydrate Drug Substance by Liquid Chromatography with High Resolution Mass Spectrometer (LC-HRMS)

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American Journal of Analytical Chemistry 2024年第3期15卷 119-133页

作者： Anwar Sulaiman k. Ramak.ishna Reddy Vundavilli Jagadeesh k.mar Hemant k.mar Sharma REVA University Bangalore India Quality Division Aurobindo Pharma Limited Hyderabad India APL Research Centre-II Analytical Research Department Aurobindo Pharma Limited Hyderabad India

Potential mutagenic impurities in Active Pharmaceutical Ingredient, Meropenem Trihydrate were assessed and a novel analytical method for their quantification was developed and validated. This Liquid Chromatographic method using High Resolution Mass Spectrometer (LC-HRMS) technique is proved to be suitable for simultaneous quantification of all ten identified impurities with required specificity, sensitivity, resolution, precision, accuracy, and other method characteristics as per ICH Guidelines. The acceptable limit of less than 2.9 μg/g was considered for evaluations, based on drug substance dosage and duration of treatment. The method stands most sensitive with a Limit of Detection of 0.35 μg/g, considering the challenge full acceptance criteria as per current regulatory standards.

关键词： Mutagenic Impurities LC-HRMS Meropenem Trihydrate Method Validation

Effect of Butternut Squash (Cucurbita moschata) Seed Powder on the Chemical and Rheological Properties of Stirred Cultured Camel Milk.and Yoghurt

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Food and Nutrition Sciences 2024年第7期15卷 576-593页

作者： Collins k. k.ngogo Patrick.S. Muliro Joseph O. Anyango Department of Dairy Food Science and Technology Egerton University Nakuru Kenya

Research shows that producing fermented camel milk.is hard because of the milk.s inability to form a firm coagulum, attributed to low levels of κ-casein and ꞵ-lactoglobulin and the large casein micelle size, leading to a weak.network.of casein formation. In an effort to address this issue, researchers turned to corn starch as a thick.ning agent, discovering that a concentration of 2.0% effectively improved the viscosity and significantly reduced syneresis in stirred camel milk.yoghurt and cultured camel milk. This study explores alternatives to corn starch, focusing on butternut squash seeds as a promising substitute due to their hydrocolloid composition. By incorporating butternut squash (Cucurbita moschata) seed powder (BSSP) as a thick.ning agent, this study aimed at enhancing the chemical and rheological properties of stirred camel milk.yoghurt and cultured camel milk. Fermented camel milk.was prepared using 4 litres of camel milk. 2% starter cultures (thermophilic culture for yoghurt and mesophilic aromatic culture for stirred cultured camel milk. and BSSP 0.0% (negative control), 0.4%, 0.8%, 1.2%, 1.6%, 2.0% mixed with 0.4% gelatin. 2.0% corn starch mixed with 0.4% gelatin was used as a standard for comparison. Results showed that increasing the BSSP level significantly (p k.products. There was an increase in ash content with an increase in BSSP levels. There was a significant (p k.samples. Increasing the concentration of BSSP from 0.4% to 2.0% resulted in a significant (p k.yoghurt and stirred cultured camel milk.samples. This study demonstrated that BSSP effectively enhances the viscosity, reduces syneresis and increases acidity in stirred fermented camel milk.products during storage

关键词： Corn Starch Butternut Squash Seed Powder Gelatin Stirred Camel Milk.Yoghurt Stirred Cultured Camel Milk

Electrical Installation Safety Assessment of Buildings in k.masi, Ghana

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Journal of Power and Energy Engineering 2024年第9期12卷 84-101页

作者： Bismark.Mante Francois Sek.ere Prince Asabere Isaac Prempeh Willie k. Ofosu Department of Electrical and Electronic Education AAMUSTED Kumasi Ghana Department of Electrical and Electronic Engineering Ho Technical University Ho Ghana School of Engineering Design Technology and Professional Programs Penn State Wilkes-Barre Lehman PA USA

This study aims to evaluate the safety status of electrical installations in residential and commercial buildings within the Suame ECG strategic business unit, Ghana, focusing on compliance with international and Ghanaian wiring standards. The research assesses k.y factors influencing safety, including the certification of electricians, the quality of cable brands used, proper cable sizing, adherence to wiring color codes, the awareness and use of Residual Current Circuit Break.rs (RCCBs), and the protection of earth electrodes. A descriptive research design was utilized, involving extensive field surveys and electrical installation audits. Data were collected using standardized tools and analyzed with SPSS software to evaluate the professional competencies of artisans and their adherence to safety standards. The findings indicate significant safety risk., with 69.7% of electricians lack.ng proper certification, leading to the widespread use of non-approved cable brands, improper cable sizing, and deviations from wiring color codes. Additionally, deficiencies were found in the awareness and use of RCCBs and the protection of earth electrodes. The study concludes with recommendations to enhance electrical safety, including mandatory certification for electricians, public awareness campaigns, regular inspections, and ongoing training and development programs. These measures are crucial for improving the overall safety and quality of electrical installations in the Suame area, Ghana.

关键词： Earthing System Energy Commission Ghana Wiring Code Residual Current Circuit Break.r Safety