Results on majority dom-chromatic sets of a graph

A majority dominating set S ⊆ V (G) is said to be majority dominating chromatic set if S satisfies the condition χ(hSi) = χ(G). The majority dom-chromatic number γMχ(G) is the minimum cardinality of majority dominating chromatic set. In this article we investigated some inequalities on Majority dominating chromatic sets of a connected and disconnected graph G. Also characterization theorems and some results on majority dom-chromatic number γMχ(G) for a vertex color critical graph and biparte graph are determined. we established the relationship between three parameters namely χ(G), γM(G) and γMχ(G) for some graphs.Publisher's Versio

Some K-Banhatti Polynomials of First Dominating David Derived Networks

            ترتبط المركبات الكيميائية والخصائص والتراكيب الجزيئية إرتباطا حتمياً. إن المؤشرات التبولوجية هي عبارة عن قيم عددية مرتبطة بالرسوم البيانية الجزيئية الكيميائية التي تساهم في فهم الصفات الفيزيائية للمركب الكيميائي والتفاعل الكيميائي والنشاط البيولوجي. في هذه الدراسة، تم الحصول على بعض الخواص التبولوجية لشبكات مشتقة ديفيد الأولى المهيمنة, وحساب العديد من ممتعددات حدود K-Banhatti من النوع الأول من شبكات مشتقة  ديفيد الأولى المهيمنة.Chemical compounds, characteristics, and molecular structures are inevitably connected. Topological indices are numerical values connected with chemical molecular graphs that contribute to understanding a chemical compounds physical qualities, chemical reactivity, and biological activity. In this study, we have obtained some topological properties of the first dominating David derived (DDD) networks and computed several K-Banhatti polynomials of the first type of DDD

Topological Indices Polynomials of Domination David Derived Networks

ترتبط الخصائص الكيميائية للمركبات الكيميائية وبنيتها الجزيئية ارتباطًا وثيقًا.  المؤشرات الطوبولوجية هي قيم عددية مرتبطة بالرسوم البيانية الجزيئية الكيميائية التي تساعد في فهم الخصائص الفيزيائية والكيميائية والتفاعل الكيميائي والنشاط البيولوجي للمركب الكيميائي. يتطرق هذا البحث على بعض الخصائص الطوبولوجية للشبكات المشتقة من  dominating David derived وتحصي العديد من K Banhatti  متعدد الحدود من النوع الثاني والثالث من DDD.The chemical properties of chemical compounds and their molecular structures are intimately connected. Topological indices are numerical values associated with chemical molecular graphs that help in understanding the physicochemical properties, chemical reactivity and biological activity of a chemical compound. This study obtains some topological properties of second and third dominating David derived (DDD) networks and computes several K Banhatti polynomial of second and third type of DDD

Antidiabetic effect of Pterocarpus marsupium seed extract in gabapentin induced diabetic rats

Background: Type 2 diabetes mellitus is the most common type of diabetes. Diabetes mellitus is a leading cause of morbidity and mortality among Indian population and all over the world with more than hundreds of millions of patients worldwide. Pterocarpus marsupium is a medicinal plant used in Ayurvedic system of medicine to control blood sugar and strong antidiabetic. The purpose of this study was to assess the hypoglycemic effect of the ethanolic extract of Pterocarpus marsupium seeds in diabetic rats.Methods: The present work was designed to evaluate the anti-hyperglycaemic activity of Pterocarpus marsupium seed extract (100 mg/kg and 200 mg/kg) on gabapentin induced hyperglycaemia in wistar albino rats. Blood glucose level, serum triglycerides, total cholesterol, HDL cholesterol and LDL cholesterol were evaluated in gabapentin induced diabetic rats. The results of the test drug were compared with the standard drug.Results: Ethanolic seed extract of Pterocarpus marsupium at 100 mg/kg and 200 mg/kg had significantly reduced the blood glucose level compared to disease control rats on day 1, 7, 14 and 21. Pterocarpus marsupium shows significant decrease in triglycerides levels, serum cholesterol levels, LDL levels and increased HDL levels, total protein levels compared to the disease control group.Conclusions: In conclusion, the present study shows that the ethanolic seed extract of Pterocarpus marsupium has potential antidiabetic action in gabapentin induced diabetic rats and the effect was found to be more similar to the standard drug metformin

Segregating the effects of seed traits and common ancestry of hardwood trees on eastern gray squirrel foraging decisions

The evolution of specific seed traits in scatter-hoarded tree species often has been attributed to granivore foraging behavior. However, the degree to which foraging investments and seed traits correlate with phylogenetic relationships among trees remains unexplored. We presented seeds of 23 different hardwood tree species (families Betulaceae, Fagaceae, Juglandaceae) to eastern gray squirrels (Sciurus carolinensis), and measured the time and distance travelled by squirrels that consumed or cached each seed. We estimated 11 physical and chemical seed traits for each species, and the phylogenetic relationships between the 23 hardwood trees. Variance partitioning revealed that considerable variation in foraging investment was attributable to seed traits alone (27-73%), and combined effects of seed traits and phylogeny of hardwood trees (5-55%). A phylogenetic PCA (pPCA) on seed traits and tree phylogeny resulted in 2 global axes of traits that were phylogenetically autocorrelated at the family and genus level and a third local axis in which traits were not phylogenetically autocorrelated. Collectively, these axes explained 30-76% of the variation in squirrel foraging investments. The first global pPCA axis, which produced large scores for seed species with thin shells, low lipid and high carbohydrate content, was negatively related to time to consume and cache seeds and travel distance to cache. The second global pPCA axis, which produced large scores for seeds with high protein, low tannin and low dormancy levels, was an important predictor of consumption time only. The local pPCA axis primarily reflected kernel mass. Although it explained only 12% of the variation in trait space and was not autocorrelated among phylogenetic clades, the local axis was related to all four squirrel foraging investments. Squirrel foraging behaviors are influenced by a combination of phylogenetically conserved and more evolutionarily labile seed traits that is consistent with a weak or more diffuse coevolutionary relationship between rodents and hardwood trees rather than a direct coevolutionary relationship. © 2015 Sundaram et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Comparative studies on poly-β-hydroxybutyrate (PHB) with gelatin and PHB with starch as a finished fabric

ABSTRACT The aim of the study was to isolate the PHB producing strains from soil samples, quantitative screening, extraction and estimation of PHB. The preliminary step involves the preparation of PHB, gelatin, starch, PHB with gelatin and PHB with starch as a polymer solution. The production of PHB with gelatin and starch coated textiles laminates by pad dry cure method. The determination of the physical, chemical and functional properties of the developed textile laminates. Comparative studies of invitro degradation of developed textile laminate (PHB with gelatin / PHB with starch) for biomedical application

GREEN SYNTHESIS AND CHARACTERIZATION OF SILVER NANO PARTICLES BY USING PSIDIUM GUAJAVA LEAF EXTRACT

In this study, rapid, simple approach was applied for synthesis of silver nanoparticles by using Psidium guajava aqueous leaf extract. The plant extract acts as both reducing agent and capping agent. The green synthesized silver nanoparticles were characterized by using physic-chemical techniques viz, UV-Visible spectroscopy, Fourier Transform Infrared Spectrophotometer [FTIR], Particle size analyser and Scanning electron microscopy. UV-Visible spectrophotometer showed absorbance peak in the range of 419nm.The compounds responsible for silver ions and the functional groups present in plant extract were identified and investigated by FTIR technique. The characterization data reveals that the particles were in crystalline in nature with an average size of 62nm. The silver nanoparticles (Ag NPs) were rapidly synthesized using aqueous extract of guava leaf with AgNO3 solution within 15min at room temperature, without the involvement of any hazardous chemicals. Keywords: Nano particles, green synthesis, Silver,  Psidium guajava and reducing agents

Apathy and functional disability in behavioral variant frontotemporal dementia

Background Behavioral variant frontotemporal dementia (bvFTD) has profound consequences on patients and their families. In this multicenter study, we investigated the contribution of cognitive and neuropsychiatric factors to everyday function at different levels of overall functional impairment. Methods In a retrospective cross-sectional study, 109 patients with bvFTD from 4 specialist frontotemporal dementia centers (Australia, England, India, and Brazil) were included. The measures administered evaluated everyday function (Disability Assessment for Dementia [DAD]), dementia staging (Clinical Dementia Rating [CDR]), general cognition (Addenbrooke’s Cognitive Examination–revised [ACE-R]), and neuropsychiatric symptoms (Neuropsychiatric Inventory [NPI]). Patients were then subdivided according to functional impairment on the DAD into mild, moderate, severe, and very severe subgroups. Three separate multiple linear regression analyses were run, where (1) total DAD, (2) basic activities of daily living (BADL), and (3) instrumental activities of daily living (IADL) scores were dependent variables; ACE-R total score and selected NPI domains (agitation/aggression, euphoria, apathy, disinhibition, irritability, aberrant motor behavior) were used as independent variables. Age, sex, education, and country of origin were controlled for in the analyses. Results Cognitive deficits were similar across the mild, moderate, and severe subgroups but significantly worse in the very severe subgroup. NPI domain scores (agitation/aggression, euphoria, apathy, disinhibition, irritability, aberrant motor behavior) did not differ across the DAD subgroups. In the multiple regression analyses, a model including ACE-R and NPI apathy explained 32.5% of the variance for total DAD scores. For IADL, 35.6% of the variance was explained by the ACE-R only. No model emerged for BADL scores. Conclusions Cognitive deficits and apathy are key contributors to functional disability in bvFTD but factors underlying impairment in BADLs remain unclear. Treatments targeting reduction of disability need to address apathy and cognitive impairment to ensure greater efficacy, especially in regards to IADLs

Factor Structure and Measurement Invariance of the Spanish Burnout Inventory Among Professionals Across 17 Countries and Regions

Studies on the prevalence of burnout in professionals in service organizations who work in direct contact with the clients or users of the organization have concluded that burnout is a serious health disorder that has increased due to the COVID-19 pandemic. A significant advantage of the Spanish Burnout Inventory (SBI) over other instruments is that it provides a broader conceptualization of burnout by including feelings of guilt as a dimension of burnout to explain its development. However, the measurement invariance of the SBI across countries has not been investigated. The purpose of this study was to test the measurement invariance of the SBI among professionals across 17 countries and regions in Europe, Latin America, and Asia, and in different languages. All the countries showed a good fit to the four-factor model, except the Indian sample, which was excluded from the measurement invariance study. Using the alignment method, it was possible to verify the scalar measurement invariance of the four SBI factors across 15 countries and one Spanish region (16 samples). The comparison of estimated latent means indicates that France is the country with the lowest scores on the Enthusiasm factor and the highest scores on the negative factors (Exhaustion, Indolence, and Guilt). In contrast, the Andean countries, Colombia, Peru, and Ecuador, show the highest latent means on the Enthusiasm factor and the lowest means on the negative factors. These results support the validity of the SBI in the countries and regions in Europe and Latin America included in this study

Methylthioadenosine reverses brain autoimmune disease

OBJECTIVE: To assess the immunomodulatory activity of methylthioadenosine (MTA) in rodent experimental autoimmune encephalomyelitis (EAE) and in patients with multiple sclerosis. METHODS: We studied the effect of intraperitoneal MTA in the acute and chronic EAE model by quantifying clinical and histological scores and by performing immunohistochemistry stains of the brain. We studied the immunomodulatory effect of MTA in lymphocytes from EAE animals and in peripheral blood mononuclear cells from healthy control subjects and multiple sclerosis patients by assessing cell proliferation and cytokine gene expression, by real-time polymerase chain reaction, and by nuclear factor-kappaB modulation by Western blot. RESULTS: We found that MTA prevents acute EAE and, more importantly, reverses chronic-relapsing EAE. MTA treatment markedly inhibited brain inflammation and reduced brain damage. Administration of MTA suppressed T-cell activation in vivo and in vitro, likely through a blockade in T-cell signaling resulting in the prevention of inhibitor of kappa B (IkappaB-alpha) degradation and in the impaired activation transcription factor nuclear factor-kappaB. Indeed, MTA suppressed the production of proinflammatory genes and cytokines (interferon-gamma, tumor necrosis factor-alpha, and inducible nitric oxide synthase) and increased the production of antiinflammatory cytokines (interleukin-10). INTERPRETATION: MTA has a remarkable immunomodulatory activity and may be beneficial for multiple sclerosis and other autoimmune diseases