893 research outputs found

    The Challenges of Psychological Adjustment for International Students: A Critical Analysis of Coping Mechanisms and Support Services

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    This paper critically analyzes the challenges of psychological adjustment faced by international students and explores coping mechanisms and support services that can help them overcome these challenges. The essay first introduces the background information on international students and highlights the importance of psychological adjustment for their well-being and academic success. The challenges of psychological adjustment, including cultural, academic, social adjustment, and language barrier, are discussed in detail. The essay then explores coping mechanisms, including problem-focused coping, emotion-focused coping, seeking social support, and cultural adjustment programs, and the support services, including counseling services and international student services, that can help international students adjust to their new environment. Finally, the essay evaluates the effectiveness of these coping mechanisms and support services, emphasizing the importance of cultural competence in providing effective support services. This essay has practical implications for higher education institutions in providing tailored support to international students and highlights the need for future research to explore the effectiveness of coping mechanisms and support services for different groups of international students and the impact of the COVID-19 pandemic on their psychological adjustment

    The Effect of Social Isolation on the Mental Health of International Students

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    This paper looks into how social isolation affects international college students mental health. An increase in international students studying at colleges and universities abroad can be attributed to increased global mobility over the previous few decades. Because of this, these students struggle in certain ways to fit into their new academic and social surroundings. Among these difficulties, social isolation among overseas students has been recognized as a major issue. This essay will investigate how social isolation affects the mental health of international college students by drawing on existing studies. The various types of social isolation will be covered in the essay along with how they may affect mental health. It will also be looked at whether factors like linguistic difficulties, cultural shock, prejudice, and discrimination contribute to social isolation among overseas students. In light of the hazards to mental health posed by social isolation among international students, this presentation will offer some potential solutions. The findings of the inquiry will be utilized to create solutions that can assist overseas students in reducing the detrimental impacts of social isolation on their mental health. Compared to other groups, college students’ mental health has not been adequately researched, even though social isolation can be an emotionally and mentally damaging experience. The paper will focus on the various mental health impacts that international college students experience such as depression, anxiety, and long-term psychological harm. An analysis of existing literature on the topic, interviews with international college students, and the mental health resources available to this population are also discussed. The main findings of the research show that international college students living in a foreign country experience significant levels of social isolation due to language barriers and cultural differences

    PGPM-induced defense-related enzymes in aerobic rice against rice leaf blast caused by Pyricularia aryzae

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    Rice blast caused by Pyricularia oryzae is the most devastative disease especially under aerobic cultivation systems. The bio-efficacy of plant growth-promoting microorganisms: Pseudomonas aeruginosa (UPMP1), Corynebacterium agropyri (UPMP7), Enterobacter gergoviae (UPMP9) and Bacillus amyloliquefaciens (UPMS3), Trichoderma harzianum (UPMT1) and Trichoderma virens (UPMT2) in induction of defense-related enzymes against Pyricularia oryzae was evaluated in rice cultivated under aerobic conditions. Under dual culture plate testing, all PGPMs indicated antagonism against P. oryzae with percentage inhibition radial growth (PIRG) which ranged from 51.69–81.97 %. The bio-efficacy of the respective PGPM in induction of defense-related enzymes in rice seedlings was evaluated based on individual inoculation before challenged inoculation with P. oryzae under greenhouse conditions. Inoculation of all PGPMs significantly reduced rice leaf blast severity at day eight after P. oryzae inoculation. The reduction in rice leaf blast disease severity was associated to the increase of peroxidase (PO), polyphenol oxidase (PPO) and phenylalanine ammonia-lyase (PAL) activities in rice seedlings when pre-inoculated with PGPMs. The highest leaf blast disease reduction (59.17 %) occurred with rice seedlings pre-inoculated with C. agropyri (UPMP9), followed by P. aeruginosa (UPMP1) (40.65 %), T. harzianum (UPMT1) (42.23 %), T. virens (UPMT2) (20.85 %), E. gergoviae (UPMP9) (17.84 %) and B. amyloliquefaciens (UPMS3). The high efficiency of PGPM in leaf blast disease suppression was associated with significant increase in total microbial activity (FDA hydrolysis) in rhizosphera soil (4.80–7.86 μg/g/0.5 h) compared to the control (2.25 μg/g/0.5 h). Thus, the application of PGPM is a potential alternative approach in rice leaf blast disease management of aerobic rice

    An Engineering Ethics Case Study Review: Petrobras P-36 Accident

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    In 2001, the world largest oil production in the coast of Brazil was sank due to the series of explosions. This accident claimed 11 lives of crew members and 1 of 4 main support columns affected and lame. The purpose of this case study is to learn from previous experience about the engineering failure from engineering ethics viewpoints which cover the responsible of an engineer to keep safety of people around and maintain of environmental care

    Analysis of transient multiexponential signals using cepstral deconvolution

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    We propose and test a new method of multiexponential transient signal analysis. The method based on cepstral deconvolution is fast and computationally inexpensive. The multiexponential signal is initially converted to a deconvolution model using Gardners' transformation after which the proposed method is used to deconvolve the data. Simulation and experimental results indicate that this method is good for determining the number of components but performs poorly in accurately estimating the decay rates. Influence of noise is not considered in this paper

    A review on flammability of epoxy polymer, cellulosic and non-cellulosic fiber reinforced epoxy composites

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    Natural fiber is well-known reinforcement filler in polymer-matrix composites. Composite components like organic polymers and natural fibers are natural fire conductors as the natural fiber consists of cellulose, hemicellulose, and lignin, and hence are as highly flammable as wood. Natural fiber reinforced composite materials are progressively being used in a variety of applications where their fire response is a hazardous consideration, for example, in the automotive (transportation) and building-construction industries. As a result, an awareness of their performance or response during a fire and the use of conventional fire retardants are of great importance, as they are subject to thermal decomposition when exposed to intensive high heat or fire sources. In this review paper, fire flammability is the main concern for cellulosic and non-cellulosic fiber-reinforced polymer composites, especially epoxy composites. This paper reviews the literature on the recent developments in flammability studies concerning polymers, epoxy polymers, cellulosic-fibers, and non-cellulosic fiber-reinforced epoxy bio-composites. The prime objective of this review is to expand the reach of "fire retardants for polymer materials and composites" to the science community, including physicists, chemists, and engineers in order to broaden the range of their applications

    Structural changes in cattle immature oocytes subjected to slow freezing and vitrification.

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    This study was conducted to evaluate the effect of different cryopreservation methods (slow-freezing and vitrification) on structural changes of bovine immature oocytes. Bovine ovaries were collected from local abattoirs. Cumulus-oocytecomplexes (COCs) were retrieved using aspiration method from 2-6 mm follicles. In Experiment 1, selected oocytes were randomly divided into 4 treatment groups namely freezing solution-exposed, frozen-thawed, vitrification solution-exposed and vitrified-thawed and then oocytes abnormalities were examined under a stereomicroscope. In Experiment 2, oocytes were randomly allocated to the same grouping as experiment 1 plus control group. Following freezing or vitrification, all oocytes were fixed in glutaraldehyde and processed for transmission electron microscopy. In experiment 1, there was a higher incidence of abnormalities in the frozen-thawed and vitrified-warmed oocytes compared to those in freezing solution and vitrification solution-exposed groups (P <0.05). In experiment 2, there were marked alterations in the perivitelline space, microvilli and vesicles of frozenthawed and vitrified-warmed oocytescharacterized by loss of elasticity and integrity of cytoplasmic processes and microvilli following cooling and warming. In conclusion, ethylene glycol-based freezingand vitrification solutions are suitable choices for cryopreservation of immature oocytes and most organelles are able to retain their normal morphology followingcryopreservation and thawing processe

    Dynamic Resource Management in Integrated NOMA Terrestrial-Satellite Networks using Multi-Agent Reinforcement Learning

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    This study introduces a resource allocation framework for integrated satellite-terrestrial networks to address these challenges. The framework leverages local cache pool deployments and non-orthogonal multiple access (NOMA) to reduce time delays and improve energy efficiency. Our proposed approach utilizes a multi-agent enabled deep deterministic policy gradient algorithm (MADDPG) to optimize user association, cache design, and transmission power control, resulting in enhanced energy efficiency. The approach comprises two phases: User Association and Power Control, where users are treated as agents, and Cache Optimization, where the satellite (Bs) is considered the agent. Through extensive simulations, we demonstrate that our approach surpasses conventional single-agent deep reinforcement learning algorithms in addressing cache design and resource allocation challenges in integrated terrestrial-satellite networks. Specifically, our proposed approach achieves significantly higher energy efficiency and reduced time delays compared to existing methods.Comment: 16, 1

    Adsorption of brilliant green dye in aqueous medium using magnetic adsorbents prepared from rice husk ash

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    Large scale production and extensive application of synthetic dyes in the textile industry have caused considerable environmental pollution. The treatment of colored effluents using efficient technologies, are sought after due to this concern. This research evaluates the effectiveness of magnetic adsorbent (MRHA) prepared from rice husk ash (RHA) by a chemical processing method to remove brilliant green (BG) dye from an aqueous medium. The resulting MRHA adsorbents were tested at different initial concentration of 5-400mg/L, adsorbents amount of 0.5-2.3g, shaking rate of 50-300rpm, contact time of 15-120 min, pH of 3-11, and temperature of 27-60 C. A maximum removal of 96.65% was obtained at initial dye concentration of 200mg/L, adsorbents amount of 2g, shaking rate of 150rpm, contact time of 60min, and temperature of 50 C. The fresh and spent MRHA adsorbents were analyzed through scanning electron microscopy (SEM) and particle size distribution. The particle analysis of the fresh and spent adsorbents indicated bimodal pore size of 90 and 900 μm, respectively. The adsorption behavior of the adsorbent followed those of the Langmuir, Freundlich, and Temkin isotherm models. However, Temkin isotherm model displayed the best fit with the coefficient of determination, R2 of 0.811, suggesting a strong interaction, equivalent to that of chemical absorption between BG dye molecules and the surface of MRHA adsorbent for effective removal of BG dye from the aqueous medium. The magnetic character of the adsorbents allowed the spent sample to be isolated successfully and conveniently by using an external magnetic field
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