oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 29 )

2018 ( 64 )

2017 ( 64 )

2016 ( 71 )

Custom range...

Search Results: 1 - 10 of 20689 matches for " Borah Kim "
All listed articles are free for downloading (OA Articles)
Page 1 /20689
Display every page Item
Astrophysical Constraints on the Scale of Left-Right Symmetry in Inverse Seesaw Models  [PDF]
Debasish Borah
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.329144
Abstract: We revisit the recently studied supersymmetric gauged inverse seesaw model [1] to incorporate astrophysical constraints on lightest supersymmetric particle (LSP) lifetime such that LSP constitutes the dark matter of the Universe. The authors in [1] considered light sneutrino LSP that can play the role of inelastic dark matter (iDM) such that desired iDM mass splitting and tiny Majorana masses of neutrinos can have a common origin. Here we consider a generalized version of this model without any additional discrete symmetry. We point out that due to spontaneous R-parity(Rp=(-1)3(B-L)+2s) breaking in such generic supersymmetric gauged inverse seesaw models, LSP can not be perfectly stable but decays to standard model particles after non-renormalizable operators allowed by the gauge symmetry are introduced. We show that strong astrophysical constraints on LSP lifetime makes sneutrino dark matter more natural than standard neutralino dark matter. We also show that long-livedness of sneutrino dark matter constrains the left right symmetry breaking scale MR<104 GeV.
Frontal White Matter Alterations in Short-Term Medicated Panic Disorder Patients without Comorbid Conditions: A Diffusion Tensor Imaging Study
Borah Kim, Jeong Hoon Kim, Min-Kyoung Kim, Kang Soo Lee, Youngki Kim, Tai Kiu Choi, Yun Tai Kim, Sang-Hyuk Lee
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0095279
Abstract: The frontal cortex might play an important role in the fear network, and white matter (WM) integrity could be related to the pathophysiology of panic disorder (PD). A few studies have investigated alterations of WM integrity in PD. The aim of this study was to determine frontal WM integrity differences between patients with PD without comorbid conditions and healthy control (HC) subjects by using diffusion tensor imaging. Thirty-six patients with PD who had used medication within 1 week and 27 age- and sex-matched HC subjects participated in this study. Structural brain magnetic resonance imaging was performed on all participants. Panic Disorder Severity Scale and Beck Anxiety Inventory (BAI) scores were assessed. Tract-based spatial statistics (TBSS) was used for image analysis. TBSS analysis showed decreased fractional anisotropy (FA) in frontal WM and WM around the frontal lobe, including the corpus callosum of both hemispheres, in patients with PD compared to HC subjects. Moreover, voxel-wise correlation analysis revealed that the BAI scores for patients with PD were positively correlated with their FA values for regions showing group differences in the FA of frontal WM of both hemispheres. Altered integrity in frontal WM of patients with PD without comorbid conditions might represent the structural pathophysiology in these patients, and these changes could be related to clinical symptoms of PD.
Water Stress Effects on Leaf Growth and Chlorophyll Content but Not the Grain Yield in Traditional Rice (Oryza sativa Linn.) Genotypes of Assam, India II. Protein and Proline Status in Seedlings under PEG Induced Water Stress  [PDF]
Jnandabhiram Chutia, Sailen Prasad Borah
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.37115
Abstract: Abiotic stresses can directly or indirectly affect the physiological status of an organism by altering its metabolism, growth, and development. The leaf growth and Chlorophyll content has significantly shown to vary from the control ones while the grain yield was not affected. While many plant species naturally accumulate proline and protein as major organic osmolytes when subjected to different abiotic stresses. These compounds are thought to play adaptive roles in mediating osmotic adjustment and protecting sub cellular structures in stressed plants. Different approaches have been contemplated to increase the concentrations of proline like compounds in plants grown under stress conditions to increase their stress tolerance. Seven different traditional rice varieties of Assam were evaluated for their response to osmolyte production under physiological drought condition through simulation at three levels of osmotic stress of 0.15 bar, 0.25 bar and 0.56 bar of physiological drought initiated by polyethylene glycol (PEG 6000). Along with the evaluation for osmolyte response the different components of genotypic variation for six different drought-sustaining characters in the seven rice varieties were also substantiated. The results indicated that plant height and seed number have significant genotypic coefficient of variability (GCV) and heritability. Verities like Laodubi, Leserihali, Beriabhanga and Borah were screened out as the best drought sustaining variety.
Remarks on the metric induced by the Robin function II
Diganta Borah
Mathematics , 2012,
Abstract: Let $D$ be a smoothly bounded pseudoconvex domain in $\mathbf C^n$, $n > 1$. Using the Robin function $\La(p)$ that arises from the Green function $G(z, p)$ for $D$ with pole at $p \in D$ associated with the standard sum-of-squares Laplacian, N. Levenberg and H. Yamaguchi had constructed a K\"{a}hler metric (the so-called $\La$-metric) on $D$. Assume that $D$ is strongly pseudoconvex and $ds^2$ denotes the $\La$-metric on $D$. In this article, first we prove that the holomorphic sectional curvature of $ds^2$ along normal directions converges to a negative constant near the boundary of $D$. Then, we prove that if $D$ is not simply connected, then any nontrivial homotopy class of $\pi_1(D)$ contains a closed geodesic for $ds^2$. Finally, we prove that the diminesion of the space of square integrable harmonic $(p, q)$-forms on $D$ relative to $ds^2$ is zero except when $p+q=n$ in which case it is infinite.
Remarks on the metric induced by the Robin function III
Diganta Borah
Mathematics , 2014,
Abstract: Let $D$ be a smoothly bounded pseudoconvex domain in $\mathbf C^n$, $n > 1$. Using the Robin function $\Lambda(p)$ that arises from the Green function $G(z, p)$ for $D$ with pole at $p \in D$ associated with the standard sum-of-squares Laplacian, N. Levenberg and H. Yamaguchi had constructed a K\"{a}hler metric (the so-called $\Lambda$-metric) on $D$. In this article, we study the existence of geodesic spirals for this metric.
Long-Acting Injectable Antipsychotics for First-Episode Schizophrenia: The Pros and Cons
Borah Kim,Sang-Hyuk Lee,Yen Kuang Yang,Jong-Il Park,Young-Chul Chung
Schizophrenia Research and Treatment , 2012, DOI: 10.1155/2012/560836
Abstract: Clinical and psychosocial deterioration associated with schizophrenia occurs within the first few years following the onset of the illness. Therefore, to improve the long-term prognosis, it is important to provide schizophrenia patients with intensive treatment following their first episode. Relapse is highly associated with partial medication adherence or nonadherence in patients with first-episode schizophrenia. Recent studies suggest that long-acting injectable (LAI) antipsychotics compared with oral antipsychotics are more effective for medication adherence and relapse prevention. Moreover, some clinical guidelines for the treatment of schizophrenia suggested that LAI antipsychotics should be considered when patients are nonadherent “at any stage.” Decreased compliance is a common cause of relapse during the initial stages of the disease. Therefore, LAI antipsychotics should be highly considered when treating patients with first-episode schizophrenia. In the present paper, clinical trial data and current guidelines on the use of LAI antipsychotics for first-episode schizophrenia are discussed as well as the pros and cons of this treatment option.
Long-Acting Injectable Antipsychotics for First-Episode Schizophrenia: The Pros and Cons
Borah Kim,Sang-Hyuk Lee,Yen Kuang Yang,Jong-Il Park,Young-Chul Chung
Schizophrenia Research and Treatment , 2012, DOI: 10.1155/2012/560836
Abstract: Clinical and psychosocial deterioration associated with schizophrenia occurs within the first few years following the onset of the illness. Therefore, to improve the long-term prognosis, it is important to provide schizophrenia patients with intensive treatment following their first episode. Relapse is highly associated with partial medication adherence or nonadherence in patients with first-episode schizophrenia. Recent studies suggest that long-acting injectable (LAI) antipsychotics compared with oral antipsychotics are more effective for medication adherence and relapse prevention. Moreover, some clinical guidelines for the treatment of schizophrenia suggested that LAI antipsychotics should be considered when patients are nonadherent “at any stage.” Decreased compliance is a common cause of relapse during the initial stages of the disease. Therefore, LAI antipsychotics should be highly considered when treating patients with first-episode schizophrenia. In the present paper, clinical trial data and current guidelines on the use of LAI antipsychotics for first-episode schizophrenia are discussed as well as the pros and cons of this treatment option. 1. Introduction Schizophrenia is a chronic disorder characterized by periods of illness alternating with periods of full or partial remission. Previous studies [1, 2] suggest that schizophrenia is a neurodegenerative disease associated with frequent relapses. This alternating nature of the illness causes neurotoxicity in the brain, thereby resulting in structural abnormalities, including ventricular enlargement and cortical atrophy. Recent evidence further suggests that progressive structural changes in the brain occur within the initial years following a diagnosis [3–5]. Moreover, with each subsequent relapse after the first episode, it usually takes longer time to reach remission [6]. The primary clinical and psychosocial deterioration associated with schizophrenia occurs within the first 5 years following the onset of the illness, called the critical period [7, 8]. Therefore, it is important to provide intensive biopsychosocial interventions during the critical period in an effort to improve the long-term prognosis. The primary goal of treatment during the critical period is to prevent a subsequent relapse and to restore socio-occupational functioning to the premorbid level. The relapse rate in patients with first-episode schizophrenia is relatively low during the first year of the illness but substantially rises to rates of 53.7% and 74%–81.9% after 2 and 5 years, respectively [9, 10]. The most common
Fabrication of Pamidronic Acid-Immobilized TiO2/Hydroxyapatite Composite Nanofiber Mats for Biomedical Applications
Yong-Suk Shin,Jyoti S. Borah,Adnan Haider,Sukyoung Kim,Man-Woo Huh,Inn-Kyu Kang
Journal of Nanomaterials , 2013, DOI: 10.1155/2013/404210
Abstract: TiO2/hydroxyapatite (TiO2/HA) composite nanofiber mats were fabricated using an electrospinning technique. Subsequently, pamidronic acid (PDA) was immobilized on the surface of the TiO2/HA nanofiber mat to improve osseointegration. X-ray photoelectron microscopy and scanning electron microscopy (SEM) were used to characterize the structure and morphology of the PDA-immobilized TiO2/HA composite nanofiber mat (TiO2/HA-P). The potential of TiO2/HA-P as a bone scaffold was assessed by examining the cell adhesion and proliferation of osteoblasts and osteoclasts. The adhesion and proliferation of osteoblasts on the TiO2/HA-P composite nanofiber mat were slightly higher than those on the TiO2/HA composite nanofiber mat, whereas the viability of osteoclasts on the TiO2/HA-P nanofiber mat was significantly suppressed. These results suggest that the TiO2/HA-P nanofiber mat has the potential for use as a therapeutic bone implant. 1. Introduction Titanium (Ti) and some of its alloys are the most widely used metallic materials for biomedical applications. Their inherent biocompatibility, excellent mechanical properties, and corrosion resistance make them suitable for biomaterials in tissue engineering [1, 2]. Over the past few decades, a range of materials and designs have been used to improve the osseointegration of titanium implants [3–7]. Hydroxyapatite (HA), a major inorganic component of natural bone and teeth, has been studied extensively and used in biomedical implant applications and bone regeneration owing to its good osteoconductivity and bone binding ability to natural bone [8–11]. The addition of hydroxyapatite (HA) to titanium implants has attracted considerable interest because of its potential use as a biomaterial with a range of treatments, such as sol-gel and hydrolysis and hydrothermal treatment [12]. Many researchers have examined TiO2/HA composites [13, 14]. Ramires et al. investigated the biocompatibility of TiO2/HA composite coatings and reported that they are bioactive and effective in improving the growth of osteoblasts [15]. Bigi et al. reported that hydroxyapatite-coated nanostructured titanium alloys induce the differentiation of mesenchymal cells (MSCs) towards a phenotypic osteoblast lineage [16]. Recently Kim et al. prepared TiO2/HA composite nanofiber mats using an electrospinning technique and immobilized collagen on the surface of the mats to improve the tissue compatibility. They showed that the collagen-immobilized TiO2/HA composite nanofiber mats induced better adhesion, proliferation, and differentiation of osteoblasts than the
Optimization in Site Selection of Wind Turbine for Energy Using Fuzzy Logic System and GIS—A Case Study for Gujarat  [PDF]
Kunal Kumar Borah, Souvnik Roy, T. Harinarayana
Open Journal of Optimization (OJOp) , 2013, DOI: 10.4236/ojop.2013.24015
Abstract:

The development of new wind energy project requires studying of many parameters to achieve maximum benefits at the cost of minimum environmental impacts. Using Geographic Information System (GIS), an analytical framework has been developed in this paper with fuzzy logic to evaluate the suitable site for turbines for optimum energy output. The criteria for suitable site for energy optimization are environmental, physical and human factors. The present study helps to assess the appropriate sites for the wind turbines in Gujarat. The result obtained from the study conveys the suitability of the development of wind turbines along the western parts of Gujarat. The suggested model could be used for the future site selection of the wind turbine which in turn could be of orientation for energy planners and decision makers.

Indiferen?a, simetria e perfei??o segundo Leibniz
Danowski,borah;
Kriterion: Revista de Filosofia , 2001, DOI: 10.1590/S0100-512X2001000200003
Abstract: in the theodicy, leibniz presents three different solutions to the sophism of buridan's ass, and more generally, to the problem of the liberty of indifference. the first criticizes the idea that, even in a situation of perfect equilibrium and complete absence of a determining reason, men (as opposed to irrational animals) would be able to act. the other two deny the very possibility of perfect equilibrium and symmetry in the universe, such that this sophism looses its meaning.
Page 1 /20689
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.