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Diversity of Flowering Plants in Nubri Valley, Manaslu Conservation Area, Central Nepal  [PDF]
Shova Sapkota, Bikram Pandey, Krishna Kumar Shrestha
American Journal of Plant Sciences (AJPS) , 2017, DOI: 10.4236/ajps.2017.86102
Abstract: Central Nepal has long history in the field of botanical investigation in contrast with different parts of the nation. Nevertheless, the present study area (Manaslu Conservation Area) is still under-explored. The present floristic study was carried out with the aim of fulfilling this gap by giving particular attention on flowering plants and their documentation. Two field visits were directed in May-June 2012 and September-October 2012 in two unique seasons with a specific end goal to gather plant samples of both seasons. On the contrary, herbarium specimens were prepared and later identified at Tribhuvan University Central Herbarium (TUCH) and National Herbarium and Plant Laboratory (KATH). The present study uncovers the presence of 276 species of flowering plants belonging to 78 families and 200 genera of which 63 families belong to dicotyledons and 15 families belong to monocotyledons. Among these, 17 species (6.15%) of climbers, 178 species (64.49%) of herbs, 58 species (21.01%) of shrubs and 23 species (8.33%) of trees are found. Economically important flowering plants comprise about 156 species where 75 species are used as medicine, 29 species as fuel wood, 23 species as fodder, 29 species are edible, 6 species are for religious purpose, 5 specifically for construction purpose, 10 for ornamental and 13 species reported to have miscellaneous uses. MCA accounts to 9 flowering plant species for research and development and agro-technology development and 12 species are listed under IUCN and CAMP threatened categories. MCA and its affinity are likewise house to 10 endemic flowering plants. As from the study it can be inferred that Manaslu Conservation Area (MCA) is a treasure hub of flowering plants that not only represent its economic importance rather it is also a house to threaten and endemic flowering plants. Thus, proper management plans must be implemented for the conservation of resources in MCA.
Assessing Current Situation of Domestic Violence against Women: A Study in Hasandaha, Morang
Krishna P Pandey,Gyanendra Shrestha
Himalayan Journal of Sociology and Anthropology , 2014, DOI: 10.3126/hjsa.v6i0.10689
Abstract: Nepal like many other countries represents a multicultural characteristics having patriarchal social structure. Recognizing the need to effectively reduce the incidences of violence against women, Nepal ratified the CEDAW in 1991. But the incidences of DVAW have been repeatedly reported and the challenge to the human rights of the Nepalese women has been added. The heterogeneity of Nepalese society and social interaction among the different caste/ethnic groups make the issue of DVAW more complicated that eventually requires sociological study. The people of Hasandaha, Morang, represent the caste/ethnic heterogeneity and could be the representation of Nepalese villages. The women of that village are also suffering from multiple forms of violence against them. Physical assault, sexual abuse to psychological torture is among the forms of violence that they aspire to escape from. Rigid caste norms and patriarchal values constrict the freedom of movement among the women of Hasandaha village. These women express that the government, NGOs and civil society should have decisive roles with regard to the elimination of domestic violence against women. For this, effective mobilization of local communities, awareness generation among them and changes in the state’s attitude towards DVAW only as of private concern are key to reduce the incidences of DVAW in Hasandaha village of Morang district, Nepal. DOI: http://dx.doi.org/10.3126/hjsa.v6i0.10689 ？ Himalayan Journal of Sociology and Anthropology Vol.6 2014: 64-85
Rehydration Characteristics and Structural Changes of Sweet Potato Cubes after Dehydration
Ngankham Joykumar Singh,Ram Krishna Pandey
American Journal of Food Technology , 2011,
Abstract: Moisture removal from solids is an integral part of food processing with convective drying representing one of the most important techniques for preservation of biological products. However, removal of moisture during drying has detrimental effects on the physiochemical properties of the material. For evaluating of the rehydration capability the sweet potato cubes of 1.2x1.2x1.2 cm were dried to final moisture content of 6-7% (d.b.) under air temperature of 50, 60, 70, 80 and 90°C and air velocity of 3.5 m sec-1 in a laboratory scale hot air dryer. Deterioration of the physical attributes of the system was evaluated on the basis of rehydration characteristics, namely the coefficient of rehydration and rehydration ratio at different soaking time period of 10, 15, 20, 25 and 30 min. Structural changes in Sweet potato cubes after drying were studied by light microscopy. The rate and degree of dehydration was dependent on the drying conditions, with extent of cellular and structure disruption dictating the rehydrational capacity. The drying temperature had an effect on the shrinkage of cell structures of sweet potato. It was observed that the degree of shrinkage of sweet potato during low temperature drying is greater than at high-temperature during drying.
DIMENSIONAL STABILITY, UV RESISTANCE, AND STATIC MECHANICAL PROPERTIES OF SCOTS PINE CHEMICALLY MODIFIED WITH ALKYLENE EPOXIDES
Krishna K. Pandey,Mark Hughes,Tapani Vuorinen
BioResources , 2010,
Abstract: Unprotected wood exposed outdoors suffers from photodegradation due to absorption of UV light by lignin and dimensional changes because of moisture absorption or desorption by free hydroxyl groups in wood constituents. Chemical modification of cell wall polymers is one of the effective methods of inducing dimensional stability and UV resistance in wood. In this work, etherification of Scots pine (Pinus sylvestris L.) was carried out with alkylene epoxides. Extracted blocks of Scots pine were modified with propylene oxide (PO) and butylene oxide (BO) between 30 and 75 oC for different durations and under varying alkaline conditions. Different weight percent gains (WPG) were obtained. WPG increased with temperature, reaction time, and NaOH concentration. The dimensional stability, mechanical properties, and UV resistance of chemically modified wood were evaluated. Etherified wood exhibited an improvement in dimensional stability, but the efficacy dropped with successive water-soaking, oven-drying cycles, indicating a loss of modifying chemical. After four soak-dry cycles, both modifications retained positive anti-swelling efficiency (ASE) values; however, at WPG values >30%, the PO modified material exhibited a reduction in ASE, indicating cell wall degradation. Both PO and BO modified wood exhibited a loss in static mechanical properties measured as modulus of elasticity and modulus of rupture, with the reduction being dependent upon the level of modification. Modification of wood with PO provided partial photo stability to wood polymers,
STUDY OF DIMENSIONAL STABILITY, DECAY RESISTANCE, AND LIGHT STABILITY OF PHENYLISOTHIOCYANATE MODIFIED RUBBERWOOD
Krishna K. Pandey,Jayashree,H. C. Nagaveni
BioResources , 2009,
Abstract: Rubber wood (Hevea brasiliensis) was esterfied with phenylisothiocya-nate, and dimensional stability, decay resistance, and photo stability of the modified wood was assessed. The chemically modified wood was characterized by FTIR and CP/MAS 13C NMR spectroscopy. Unmodified and modified samples were exposed to a brown rot (Polyporus meliae) and a white rot (Coriolus versicolor) fungus for 12 weeks. Modified wood samples exhibited good dimensional stability and were very resistant to decay. However, phenylisothiocyanate modification of wood was not effective in decreasing photo-yellowing.
Xeroderma pigmentosa with ocular association: Case report  [PDF]
Achyut N. Pandey, Krishna Kuldeep, Ameeta Koul, Manoj Tyagi, Parul Singh, Parmeshwari Das Sharma, Deepak Dimri
Case Reports in Clinical Medicine (CRCM) , 2013, DOI: 10.4236/crcm.2013.28123
Abstract: Xeroderma pigmentosum is a rare, autosomal recessive disease caused by a defect in DNA repair. Patients with xeroderma pigmentosum often have cutaneous and ocular sun sensitivity, freckle-like skin pigmentation, multiple skin and eye cancers, and, in some patients, progressive neurodegeneration. Xeroderma pigmentosum predominantly affects the ultraviolet (UV) exposed ocular surface, resulting in eyelid atrophy and cancers, corneal dryness, exposure keratopathy, and conjunctival tumors. General features included parental consanguinity (40%), familiarity (60%), onset of symptoms in the first 2 years (50%), malignant skin neoplasms (60%), and carcinoma of the tongue (20%). Among the ocular features, 50% of patients presented with photophobia. Lid freckles or atrophic skin lesions were seen in all patients. Lower lid tumours were seen in 30%, chronic conjunctival congestion in 40%, corneal opacification in 40%, squamous cell carcinoma of limbus in 20%, bilateral pterygium in 40%, and visual impairment in 50%. We report the clinical history and ocular pathology of a boy who is having xeroderma pigmentosum with ocular manifestations. The ophthalmic manifestations of xeroderma pigmentosum are discussed and reviewed with respect to this report and other cases in the literature. These cases illustrate the role of DNA repair in protection of the eyes from UV damage and neuron degeneration of the retina.
On unavoidable obstructions in Gaussian walks
Sai Teja Somu,Ram Krishna Pandey
Mathematics , 2015,
Abstract: In this paper we investigate a problem about certain walks in the ring of Gaussian integers. Let $n,d$ be two natural numbers. Does there exist a sequence of Gaussian integers $z_j$ such that $|z_{j+1}-z_j|=1$ and a pair of indices $r$ and $s$, such that $z_{r}-z_{s}=n$ and for all indices $t$ and $u$, $z_{t}-z_{u}\neq d$? If there exists such a sequence we call $n$ to be $d$ avoidable. Let $A_n$ be the set of all $d\in \mathbb{N}$ such that $n$ is not $d$ avoidable. Recently, Ledoan and Zaharescu proved that $\{d \in \mathbb{N} : d|n\}\subset A_n$. We extend this result by giving a necessary and sufficient condition for $d\in A_n$ which answers a question posed by Ledoan and Zaharescu. We also find a precise formula for the cardinality of $A_n$ and answer three other questions raised in the same paper.
The Locus PgaABCD of Acinetobacter junii Putatively Responsible for Poly-β-(1,6)-N-Acetylglucosamine Biosynthesis Might Be Related to Biofilm Formation: A Computational Analysis  [PDF]
Bipransh Kumar Tiwary, Arvind Kumar, Ravi Kant Pathak, Nishtha Pandey, Krishna Kant Yadav, Ranadhir Chakraborty
Advances in Microbiology (AiM) , 2016, DOI: 10.4236/aim.2016.63022
Abstract: Poly-β-(1,6)-N-acetylglucosamine (PNAG), the chief mediator of intercellular adhesion in many bacteria, plays an important role in biofilm formation. The pgaABCD locus was recognized from the whole genome sequence of A. junii SH205. The enzyme glycosyltransferase, PgaC, catalyzes the production of PNAG with N-acetyl-D-glucosamine monomer. In this study, the possibility of PNAG biosynthesis in A. junii SH205 with its own PgaC was explored with the aid of bioinformatics. Multiple alignments of PgaC sequences of different bacteria were used to identify conserved amino acid residues that might be critical for the functioning of the protein. Three-dimensional model of A. junii SH205 PgaC was generated for spatial visualization of amino acid residues. The analyses have shown that the protein PgaC has five conserved amino acids, Asp140, Asp233, Gln269, Arg272 and Trp273, critical for the activity of enzyme. Interaction of UDP-N-acetylglucosamine within the conserved pocket of glycosyltransferase was explored from molecular docking studies.
Magnetostratigraphy of the Middle Jurassic Sediments from Kachchh Basin, Western India  [PDF]
Venkateshwarlu Mamilla, Bindhyachal Pandey, Deo Brat Pathak, Papanna Guguloth, Jai Krishna
International Journal of Geosciences (IJG) , 2016, DOI: 10.4236/ijg.2016.73023
Abstract: The palaeoposition of India after its breakup from Gondwana and its subsequent northward journey during the Mesozoic poses many tectonic riddles. A magnetostratigraphy pattern has been constructed for the Ammonoid rich Middle Jurassic Bathonian succession of Jumara Dome, Kachchh, western India. We present the first magnetostratigraphic results from the Ammonoid bearing exposed Bathonian sediments in Kachchh. The Jumara Dome comprised of mixed carbonate-siliciclastic succession is represented by the Jhurio and Patcham formations and siliciclastic-dominating Chari Formation in the Kachchh Mainland. The Jumara Dome sediments were deposited during sea-level fluctuating, and were interrupted？by storms in the shallow marine environment. This study is based on collection of 60 oriented samples from 13 successive levels. Both thermal and AF demagnetization investigations were carried out to isolate the Characteristic Remanent Magnetization (ChRM) directions. Palaeolatitudes were computed using the ChRM directions. Magnetostratigraphic column is prepared and correlated with Geological Time Scale (GTS) of [1] [2], and this column readily matched with GTS at M41 to below and exhibits the dominance of normal polarity in Jumara.
A New Vaccine Strategy of Dendritic Cell Presented Kinetoplastid Membrane (KMP-11) as Immunogen for Control against Experimental Visceral Leishmaniasis  [PDF]
Rajesh Chaudhary, Ajay Amit, Akhilesh Kumar, Manas R. Dikhit, Krishna Pandey, Pradeep Das, Sanjiva Bimal
Modern Research in Inflammation (MRI) , 2017, DOI: 10.4236/mri.2017.63003
Abstract: Available reports suggest that, Leishmania donovani antigen KMP-11 may be significant in the modulation of immune responses in visceral leishmaniasis (VL). This study evaluated vaccine prospect of presentation of KMP-11 antigen through murine dendritic cells against VL in infected BALB/c mice. We report here that immunization with KMP-11 delivered through bone marrow derived dendritic cells can lead to killing of L. donovani in infected BALB/c mice. Furthermore, the strategy to use KMP-11 as vaccine delivered through DCs can stimulate the production of IFN-g, IL-12, IL-2R and TNF-α with concomitant down-regulation of IL-10 and IL-4. Furthermore, anti-leishmanial defence function (ROS) of splenocytes was observed increased in the presence of DC-delivered KMP-11 vaccination accompanied with an increased p38-MAPK signalling in vaccinated splenocytes. We summarized from our data that KMP-11 delivered through DCs has potential for eliciting protective immunity through pro-inflammatory cytokines (IFN-γ, IL-12, IL-2, TNF-α) following an up-regulation in signalling event of p38-MAPK. Therefore the study suggests a new control strategy against VL in future.


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