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Gupta, P. K.

• Viable Agroforestry Models and their Economics in Yamunanagar District of Haryana and Haridwar District of Uttaranchal

Abstract Views :279  |  PDF Views:0

Authors

Rajiv Kumar , P. K. Gupta , Ajay Gulati

Source

Indian Forester, Vol 130, No 2 (2004), Pagination: 131-148

Abstract

In India, natural forests are being conserved primarily for the environmental benefits. Serious efforts are also being done to plant large number of trees outside forest under social forestry programs to increase the tree cover and fulfill demand of various forest produce required by the people and forest based industries. Agricultural fields are one of the potential areas, where large scale planting of trees can be taken up along with the agricultural crops. Agroforestry models adopted by the farmers in Haryana and Uttaranchal states of India are highly lucrative, therefore, attracting farmers in a big way. NPV for different models on six years rotation varies from Rs. 26,626 to Rs. 72,705 ha^-1 yr^-1 whereas Benefit-Cost ratio and Internal Rate of Return vary from 2.35 to 3.73 and 94% to 389% respectively. Agroforestry has not only uplifted socioeconomic status of the farmers but also contributed towards overall development of the region.

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• Agroforestry Extension and its Impact on Socio-economic Scenario - a Case Study of Yamunanagar District (Haryana)

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Authors

Rajiv Kumar , P. K. Gupta , Ajay Gulati

Source

Indian Forester, Vol 129, No 4 (2003), Pagination: 435-445

Abstract

Agroforestry in India has been identified as a potential practice, which can contribute significantly in increasing tree cover; meeting people's requirement of fuel wood, fodder, timber and non timber forest products. It can also ensure supply of raw material to the forest based industries and creating large scale employment opportunities. The present article discusses as to how a well-planned and systematic approach in agroforestry extension can attract farmers to adopt agroforestry practices and initiate a diffusion process, under which the practice spreads by itself due to its inherent virtues. About nine years back agroforestry was in its infancy stage, when the systematic and intensive extension works were initiated in Yamunanagar District of Haryana State. Today, on an average 30% of the total income of a family comes from agroforestry. This additional income has brought radical changes in the social life of rural people. They enjoy better education and have access to basic and modern amenities. Farmers with big land holdings have been benefited most by the agroforestry extension work. There is a need to chalk out special programme for development of agroforestry on the lands of small and marginal farmers.

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• Utilization of Economic Potential of Lantana camara

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Authors

P. L. Soni , Sanjay Naithani , P. K. Gupta , Amit Bhatt , Ritu Khullar

Source

Indian Forester, Vol 132, No 12 (2006), Pagination: 1625-1630

Abstract

Utilization of Lantana camara can be an effective method for managing the weed. It is of potential economic value as it contains appreciable quantity of cellulosic fibres, have excellent strength properties, but till date not been exploited commercially. Owing to the presence of fibres, L. camara has potential to be utilized for making value added products such as α- cellulose and its derivatives, hand made paper, wood composites (which are good substitute of solid wood depending upon the end use) and furniture. Preliminary studies conducted have shown that Lantana camara contains ∼66 % holocellulose and ∼27% lignin. The average fibre length is 912μ with fibre diameter ∼22μ. α-Cellulose was isolated from L. camara with product yield ∼40%, brightness ∼80% at ∼95% purity having negligible ash content. α-Cellulose isolated from L. camara was derivatized to prepare water soluble carboxymethyl cellulose (CMC) having DS of 1.22, viscosity 600 cps (1% solution) and 7500 cps (2% solution).

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• Effect of Neem Seed Kernel Extracts on Spermoplane Fungi of Neem (Azadirachta indica) Seed

Abstract Views :177  |  PDF Views:0

Authors

K. K. Srivastava , P. K. Gupta , D. K. Mishra

Source

Indian Forester, Vol 124, No 12 (1998), Pagination: 1047-1051

Abstract

Effect of three isolates from Neem Seed Kernel Powder (NSKP) was studied on the seeds of Azadirachta indica A. Juss. (Neem) collected from both viz., summer (stored at ambient and low temperature) and winter fruiting seasons. Significant effect of various extracts was noticed even at 0.2 per cent concentration. However, methanol and water soluble extracts showed better results than MeOH-water extract against spermoplane fungi of Neem seed.

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• Antifungal Activity of Plant Products on Spermoplane Fungi of Azadirachta indica (Neem) Seeds

Abstract Views :236  |  PDF Views:0

Authors

K. K. Srivastava , P. K. Gupta , Y. C. Tripathi , R. Sarvate

Source

Indian Forester, Vol 123, No 2 (1997), Pagination: 157-161

Abstract

The present study envasis on the bioefficacy of Neem Seed Kernel Powder (NSKP), Karanj (Pongamia pinnata) Seed Kernel Powder (KSKP), Neem Leaf Powder (NLP) and Neem Seed Oil (NSO) against spermoplane mycoflora of Neem seeds. NSKP, KSKP and NLP were used dry and also in wet conditions. The seedS were pelleted for 5 minutes before plating. Results indicated that all the treatments were superior to the control. NSO was found to be the most effective of all the treatments. The bioefficacy of NSKP, KSKP and NLP was more effective when pelleted on wet seeds as compared to dry seeds. Neem seeds treated with NSO and NLP (on wet seeds) inhibited the growth of Aspergillus flavus, Penicillium sp. And Mucor sp. Completely.

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• On the High Performance Liquid Chromatographic Determination and Monitoring of Azadirachtin in Neem Ecotypes

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Authors

P. K. Gupta , V. V. Prabhu

Source

Indian Forester, Vol 123, No 11 (1997), Pagination: 1067-1071

Abstract

Method was optimised for quantitative determination of azadirachtin content in Neem Seed Kernel (NSK) using High Performance Liquid Chromatographic (HPLC) System. Neem fruits were collected from nine Agro-climatic zones of Rajasthan State and the samples were analysed for the azadirachtin content using this optimised method. The azadirachtin content varied from 0.194% to 0.670% by weight of neem seed kernel.

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• Micro-catchment Water Harvesting for Raising Neem in Arid Region

Abstract Views :259  |  PDF Views:0

Authors

G. N. Gupta , N. K. Limba , P. K. Gupta

Source

Indian Forester, Vol 121, No 11 (1995), Pagination: 1022-1032

Abstract

The field experiment conducted on Neem raised on various types of water harvesting structures in arid region is presented.

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• Initial Flowering and Fruiting of Neem - National Provenence Trial

Abstract Views :221  |  PDF Views:0

Authors

P. K. Gupta , R. S. Pal , C. J. S. K. Emmanuel

Source

Indian Forester, Vol 121, No 11 (1995), Pagination: 1063-1068

Abstract

Studies on fruiting in neem in the 3 year old provenance trial raised at AFRI, Jodhpur, was carried out during June 1995. Analysis of recorded data indicate that 206 trees (25.52%) of plants exhibited fruiting in the third year with variations depending on different provenances; 30 plants (3.72%) exhihited flowering at the time when the other trees were fruiting. In 2 plants (0.25%), flowering and matured fruits were observed occurring at the same time. One plus tree with respect to the extent of fruiting was identified from the Kanpur provenances, Tree No. 46.

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• Common Grasses of Gorakhpur

Abstract Views :246  |  PDF Views:0

Authors

P. K. Gupta

Source

Indian Forester, Vol 95, No 5 (1969), Pagination: 324-329

Abstract

The paper deals with an enumeration of the grass flora of Gorakhpur, A total number of 76 spceis and 45 genera belonging to the 3 tribes of Panicoideae and 11 tribes of Posideae are described. Of these 14 tribes, the tribe Andropogonear, Eragosteae and Paniceae dominate, having 28, 15 and 23 species respectively. Echinochloa frumentacea Link, Eragrostis paeoides P. Beauv., Eragastis termula Hochst., Setaria viridis (Linn.) P. Beauv., and Bothriachloa ischaemum (Linn.) Keng described in this paper are not listed by Raizada (1954) in his list of grasses of the Upper Gangetic Plain.

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• Incidence and Pattern of Acute Poisoning among Children Aged 1 Month to 18 Years : An Experience from Jammu

Abstract Views :370  |  PDF Views:0

Authors

N. Kumar ¹, A. K. Gupta ², D. K. Najotra ³, S. K. Digra ⁴, S. Gupta ⁵, P. K. Gupta ⁶, D. Kumar ¹

Affiliations
1 Department of Pediatrics, Health Services, Jammu & Kashmir, IN
2 Department of Pediatrics, Chintpurni Medical College, Pathankot, IN
3 Department of Microbiology, ASCOMS, Sidhra Jammu, IN
4 Department of Pediatrics, Governement Medical College, Jammu, IN
5 Department of Pharmacology, Governement Medical College, Jammu, IN
6 Department of Anaesthesia, Government Medical college, Jammu, IN

Source

Indian Journal of Forensic Medicine & Toxicology, Vol 7, No 2 (2013), Pagination: 134-138

Abstract

Introduction: Acute poisoning is one of the commonest pediatric emergencies and an important cause of mortality. Objectives: To study the magnitude and demographic profile of acute poisoning among hospitalized children (1Month-18 years of age) in Jammu, India.

Materials & method: All the children between one month and eighteen years of age, admitted to Pediatric wards of SMGS Hospital, Government Medical College, Jammu, India, over a period of one year as a case of acute poisoning were included in the study. The information obtained from Subjects / Parents / Guardians and examination of subjects was recorded on a pretested proforma and analyzed.

Results: A total of 245 (1.76% of total admissions) children were admitted with acute poisoning during the study period. Male - Female ratio was1.58:1. Majority 243(99.18%) patients were of oral poisoning and maximum were in the age group of more than one to five years (71.42%). Majority 219(89.39%) patients of acute poisoning were accidental. Suicidal attempts constituted 2.45% and 1.22% cases were of homicidal nature. Majority (41.63%) of poisoning cases were due to accidental ingestion of household products followed by drugs ingestion (23.67%), food poisoning (16.33%) and agricultural/industrial products ingestion (9.8% cases). Maximum 187(76.33%) patients of acute poisoning recovered whereas 3 patients (1.22%) died.

Conclusion: Acute poisoning in children is usually accidental with favorable outcome. Deaths do occur depending upon the nature of poisoning and the stage at which patient seeks medical care. Poisoning can be prevented by increasing public awareness, counseling and correct guidance to the parents.

Keywords

Poisoning, Organophosphates, Kerosene oil

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References

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• Water Quality of a Central Himalayan Lake, Lake Sattal, Uttarakhand

Abstract Views :719  |  PDF Views:246

Authors

S. Inaotombi ¹, P. K. Gupta ²

Affiliations
1 Department of Zoology, D.S.B. Campus, Kumaun University, Nainital-263 002, (U. K.), IN
2 Department of Zoology, D.S.B. Campus, Kumaun University, Nainital-263 002, (U. K., IN

Source

Journal of Ecophysiology and Occupational Health, Vol 14, No 1-2 (2014), Pagination: 83-102

Abstract

The present research was carried out in Lake Sattal, Central Himalaya, from 2011 to 2012 with the objectives to find out the changes in water quality of the lake in last 30 years and to determine the trophic status of the lake in order to decide the usefulness of the lake for human consumption and fish production. Lake Sattal is a warm monomictic water body with high DO concentration. About three decades ago, it was in oligotrophic state. Sixty times increase in the concentration of phosphorous as compared to previous study has been found. The increased concentration of phosphorous and nitrogen in water signify that the lake has become eutrophic. Occasional anoxia at mud-water interface was noticed during the investigation period which strongly suggests that the process of eutrophication has recently started. These could be attributed to changes in the land use patterns, extensive land clearance, agriculture and suburban development and other biotic activities in the catchment. At present, the lake can be exploited for fish production by artificial culture as the quality of water is suitable. The data on various parameters of water quality studied in the present investigation are also under the desirable limit for the human consumption after proper treatment.

Keywords

Desirable Limit, Lake Sattal, Trophic Status, Water Quality

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• Physico-Chemical and Mineralogical Studies on Some Kashmir Valley Soils

Abstract Views :198  |  PDF Views:176

Authors

P. K. Gupta ¹, A. R. Shah ¹, S. R. Ahmed ²

Affiliations
1 Department or Chemistry, Regional Engineering College, Hazratbal, Srinagar-Kashmir 190006, IN
2 Department of Chemistry, Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh 202001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 25, No 5 (1984), Pagination: 311-315

Abstract

Physico-chemical properties such as pH, conductance, CEC, Grain-size distribution, Atterberg's indices etc. of four different Kashmir soils have been investigated. The X-ray analyses and transmission electron microscopic study of these soils reveal the presence of kaolinite, illite and chlorite as the principal clay minerals in them.

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• Evergreen Revolution in Agriculture: Pathway to a Green Economy

Abstract Views :234  |  PDF Views:76

Authors

P. K. Gupta ¹

Affiliations
1 Molecular Biology Laboratory, Department of Genetics and Plant Breeding, CCS University, Meerut 250 004, IN

Source

Current Science, Vol 106, No 1 (2014), Pagination: 104-105

Abstract

No Abstract.

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• Competing Endogenous RNA (ceRNA): a New Class of RNA Working as Mirna Sponges

Abstract Views :247  |  PDF Views:96

Authors

P. K. Gupta ¹

Affiliations
1 Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut 250 004, IN

Source

Current Science, Vol 106, No 6 (2014), Pagination: 823-830

Abstract

MicroRNAs (miRNAs) are widely known as a class of non-coding RNA (ncRNA), which regulate gene expression, largely at the post-transcriptional level, but rarely also at the transcription level. During the last few years, a new class of ncRNA has been discovered, which counteracts the repressive activity of miRNA, by sequestering miRNA within a cell. These novel ncRNA molecules have been variously described as 'miRNA sponges/decoys', 'target mimics' or 'competing endogenous RNA'. Several reports of the occurrence of these ceRNAs and their role in regulating gene expression were published recently, which are briefly described in this article. These discoveries will keep scientists busy for many years to generate new information.

Keywords

Competing Endogenous RNA, Eukaryotic Genome, Gene Expression, miRNA Sponges.

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• Synthetic Genomics: From Synthesis of Prokaryotic Genomes to Synthesis of a Fully Functional Eukaryotic Chromosome

Abstract Views :305  |  PDF Views:78

Authors

P. K. Gupta ¹, V. Jaiswal ¹

Affiliations
1 Department of Genetics and Plant Breeding, CCS University, Meerut 250 004, IN

Source

Current Science, Vol 107, No 12 (2014), Pagination: 1975-1982

Abstract

Synthetic genomics is a new area of research and had its origin with the report of synthesis of the gene for yeast alanyl tRNA by Khorana and his co-workers in 1970. This was followed by the synthesis of a number of protein coding genes during 1980s and thereafter. In 1996, the concept of a minimal genome was put forward, suggesting that the synthesis of a genome by eliminating all nonessential genes should be possible and needs to be tried. Synthesis of genomes of some viruses like poliovirus and PhiX174, and those of bacteria including Mycoplasma genitalium and M. mycoides was reported during the first decade of the present century. In parallel with these, efforts underway at JC Venter Institute (JCVI), a project called Sc2.0 for the synthesis of all the 16 chromosomes of yeast, took shape at John Hopkins University in USA under the leadership of Jef Boeke and S. Chandrasegaran. Under this project, the synthesis of two chromosome arms (VIL and IXR) was reported in 2011 and that of the first functional chromosome (SynIII) was reported in April 2014, which marked the beginning of a new era in the field of synthetic genomics. Many more eukaryotic chromosomes will be synthesized in future and will be utilized for a variety of purposes.

Keywords

Eukaryotic Chromosome, Prokaryotic Genomes, Synthetic Biology, Synthetic Genomics.

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• Development of Hydrophobic Platinum-Doped Carbon Aerogel Catalyst for Hydrogen-Deuterium Exchange Process at High Pressure

Abstract Views :204  |  PDF Views:88

Authors

Rashmi Singh ¹, M. K. Singh ¹, D. K. Kohli ¹, Ashish Singh ¹, Sushmita Bhartiya ², A. K. Agarwal ³, P. K. Gupta ¹

Affiliations
1 Nano Functional Materials Laboratory, Laser Materials Development and Devices Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, IN
2 Nano Functional Materials Laboratory, Laser Materials Development and Devices Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, IS
3 Heavy Water Board, Vikram Bhawan, Anushakti Nagar, Mumbai 400 094, IN

Source

Current Science, Vol 109, No 10 (2015), Pagination: 1860-1864

Abstract

The use of catalysed exchange of deuterium (D) between hydrogen (H) gas and liquid water using the bithermal hydrogen water (BHW) process is a promising and environment-friendly approach for the production of heavy water. However, the use of this approach is limited by the lack of a suitable catalyst that has good activity at high operating pressures required for practical applications. We report the development of hydrophobic platinum-doped carbon aerogel (PtCA) catalyst which shows good catalytic activity for H/D isotope exchange reactions at operating pressures up to 20 bar.

Keywords

Carbon Dioxide Activation, Hydrogen Isotope Separation, Hydrophobic Catalyst, Platinum-Doped Carbon Aerogel.

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• Bioefficacy of Newer Insecticides and Biopesticides against Brinjal Shoot and Fruit Borer Leucinodes orbonalis Guenee (Lepidoptera:Pyralidae)

Abstract Views :183  |  PDF Views:1

Authors

J. P. Singh ¹, P. K. Gupta ¹, U. Chandra ¹, Vimal Kumar Singh ¹

Affiliations
1 Department of Entomology, N.D. University of Agriculture and Technology, Faizabad (U.P.), IN

Source

International Journal of Plant Protection, Vol 9, No 1 (2016), Pagination: 1-7

Abstract

A field experiment were carried out for two consecutive Rabi seasons 2013-14 and 2014-15 at Student's Instructional Farm, N.D. University of Agriculture and Technology, Kumarganj, Faizabad (U.P.). Among the various insecticides evaluated against brinjal shoot and fruit borer (L. orbonalis), Emamectin benzoate 5 SG @ 12.5g a.i./ha treated plots showed lowest infestation and gave higher fruit yield (253.12) followed by Flubendiamide 480 SC (249.33) and Novaluron 10 EC (243.63). The boipesticide NSKE 5 per cent most effective followed by Bacillus thuringensis, Verticellium lecanii and Beauveria bassiana. The highest cost: benefit ratio was obtained from NSKE 5 per cent (1:24.40) followed by Indoxacarb 14.5 SC (1:24.13) and Emamectin benzoate 5 SG (1:24.03) which were also economical than other treatments.

Keywords

Bacillus thuringensis, Leucinodes. orbonalis, Verticellium lecanii, Beauveria bassiana, Biopesticides.

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• Field Screening of Brinjal Germplasm against Brinjal Shoot and Fruit Borer (Leucinodes orbonalis Guenee.) at Different Stages of Plant

Abstract Views :131  |  PDF Views:2

Authors

J. P. Singh ¹, P. K. Gupta ¹, U. Chandra ¹, Vimal Kumar Singh ¹, A. K. Singh ¹

Affiliations
1 Department of Entomology, N.D. University of Agriculture and Technology, Faizabad (U.P.), IN

Source

International Journal of Plant Protection, Vol 9, No 1 (2016), Pagination: 84-90

Abstract

An investigation were carried out identify their characteristics for susceptibility/ resistance against brinjal shoot and fruit borer (Leucinodes orbonalis Guenee.) infestation in Rabi season 2013-14 and 2014-15. Thirty eggplant germplasm/accessions were evaluated for resistance to shoot and fruit borer. Minimum mean infestation in shoot and fruits was found in genotype Punjab Sadabahar, PLR-1, DBR-31, NURBEE, NDB-3, PUSA PURPLE LONG, NDHB-2, NDHB-3 while maximum mean infestation in fruits was recorded in Swarna mani, BR-112.

Keywords

Screening, Leucinodes orbonalis, Germplasm, Resistant.

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• Review of Adoption of Disruptive Innovative Practices in Medical Tourism in India

Abstract Views :319  |  PDF Views:167

Authors

Nityanand Sharma ¹, A. K. Jain ¹, P. K. Gupta ², Samidha D. Sharma ³

Affiliations
1 IMS-DAVV, Indore – 452001, Madhya Pradesh, IN
2 Prestige Law College, Indore - 452 010, Madhya Pradesh, IN
3 Saudi Electronic University, Abha, SA

Source

Asian Journal of Pharmaceutical Research and Health Care, Vol 9, No 3 (2017), Pagination: 112-123

Abstract

The Indian Medical Tourism Industry is significantly adding nearly 3% to the total size of healthcare sector of India. Surgical techniques and healthcare technologies have undergone revolutionary changes in past four decades giving way to early adoption of disruptive innovative practices by the quality conscious and low cost medical tourism industry in India. This secondary data based research paper aims at examining the adoption and use of Disruptive Innovative Practices in Medical Tourism Industry in India. It was concluded that Medical Tourism Industry in India is not only suitable but most probable to adopt and use the Disruptive Innovative Practices. The implication of the paper would be the encouragement of further research on disruptive innovative Practices in Medical care in India.

Keywords

Disruptive Innovative Practices, Medical Tourism Industry.

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• Food and Nutritional Security

Abstract Views :244  |  PDF Views:74

Authors

P. K. Gupta ¹

Affiliations
1 Department of Genetics and Plant Breeding, CCS University, Meerut-250 004, IN

Source

Current Science, Vol 113, No 05 (2017), Pagination: 835-835

Abstract

I have read with interest the Guest Editorial entitled 'Food for all in anthropocene era' by M. S. Swaminathan (MSS) and P. C. Kesavan (PCK). MSS is known to many of us as a world leader in the field of agriculture, and we have always admired him and derived inspiration from the way he provided this leadership.

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References

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• Formulation Development of Propranolol Hydrochloride Sustained Release Prunus amygdalus Gum Based Mucoadhesive Buccal Matrices

Abstract Views :246  |  PDF Views:1

Authors

M. A. Shende ¹, P. K. Gupta ¹

Affiliations
1 Department of Pharmaceutics, Government College of Pharmacy, Kathora Naka, Amravati. 444604, IN

Source

Asian Journal of Pharmacy and Technology, Vol 7, No 4 (2017), Pagination: 181-188

Abstract

Sustaining the release of drug from dosage form is useful especially for achieving controlled plasma level of the drug as well as improving bioavailability. The objective of the present work was to develop sustained release propranolol hydrochloride mucoadhesive buccal matrix tablets using natural and synthetic polymers. Matrix tablets were prepared by direct compression method using backing layer on three sides of matrices and evaluated for various physical parameters. Quality control parameters followed by optimization was employed to get final optimized formulation. Among all the formulations, F8 shows 72.85% better sustained release at the end of 4.5 hrs. The release co-efficient values ‘n’ (>0.5) indicated that the drug release followed non-fickian anomalous mechanism based on formulation factors. The stability studies were carried out according to ICH guideline which indicates that the selected formulation was stable. Propranolol HCl matrices could be developed mucoadhesive nature with desirable release modulation for buccal administration.

Keywords

Propranolol HCl (PPPNL HCl), Prunus amygdalus Gum, Carbopol, Matrices.

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• T-Cells and Cancer Immunotherapy (Immuno-Oncology):The 2018 Nobel Prize in Physiology or Medicine

Abstract Views :246  |  PDF Views:74

Authors

P. K. Gupta ¹

Affiliations
1 Department of Genetics and Plant Breeding, CCS University, Meerut 250 004, IN

Source

Current Science, Vol 115, No 9 (2018), Pagination: 1631-1635

Abstract

The 2018 Nobel Prize in Physiology or Medicine has been awarded to two scientists, James P. Allison and Tasuku Honjo for discovery of checkpoint molecules CTLA-4 and PD-1, which inhibit the T-cells of the im-mune system from attacking the cancerous tumours. They also discovered antibodies, which could be used for inhibiting the activity of these checkpoint molecules, thus relieving the T-cells from inhibitory activity of checkpoints, to be able to attack cancerous tumours. Such antibodies have already been converted into a number of immunotherapeutic drugs, which have been approved and are already being used for treatment of a variety of cancers.

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• Beyond Crispr:Single Base Editors for Human Health and Crop Improvement

Abstract Views :250  |  PDF Views:75

Authors

P. K. Gupta ¹

Affiliations
1 Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut - 250 004, IN

Source

Current Science, Vol 116, No 3 (2019), Pagination: 386-397

Abstract

During 2016–2018, CRISPR/Cas9 technology was modified using disabled Cas9 with nickase activity in combination with cytosine/adenine deaminases for the development of four generations of cytosine base editors (BE1–BE4) for C → U conversion and at least seven generations of adenine base editors (ABE1–ABE7) for A → I conversion. These base editors exhibited improved efficiency and reduced frequency of deletions among the products. Further improvement in the form of enhanced base editors and high-fidelity base editors was achieved through the use of 1-3 copies of uracil N-glycosylase inhibitors and phage Mu-Gam protein. The technology will bring precision to gene editing technology for human healthcare and crop improvement.

Keywords

AID/APOBEC, Base Editing, CRISPR/Cas9, Cytidine/Adenine Deaminases, Target AID.

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• Scatterometry for Land Hydrology Science and its Applications

Abstract Views :253  |  PDF Views:66

Authors

P. K. Gupta ¹, R. Pradhan ¹, R. P. Singh ¹, A. Misra ¹

Affiliations
1 Earth, Ocean, Atmosphere, Planetary Sciences and Applications Area (EPSA), Space Applications Centre, ISRO, Ahmedabad 380 015, IN

Source

Current Science, Vol 117, No 6 (2019), Pagination: 1014-1021

Abstract

This study reports the potential of SCATSAT-1 scatterometer data for catchment-scale hydrological applications related with river water level estimation and flood detection. New approaches have been developed for estimation of river water levels and detection of surface flooding using Oceansat-II scatterometer (OSCAT) and SCATSAT-1 scatterometer-based highresolution backscatter and brightness temperature (BT) datasets respectively. Ku-band sigma-0 and BT data, Shuttle Radar Topography Mission Digital Elevation Model and observed hydrometric data have been used in this study. Catchments of gauging sites and their influencing areas were delineated using the topography, wetness conditions and land-cover variations. OSCAT time series of scatterometer image reconstruction data were used to develop model function between basin water index and ground-observed river-stage datasets. Subsequently, inverting these functions on SCATSAT-1 observations, river water levels for 2017 were estimated at different gauging sites. A study on the magnitude of each flooding event in terms of intensity, duration and extent of area affected was also carried out using the scatterometerbased BT data analysis. The study demonstrated that high temporal resolution scatterometer data has the potential to fill the gap of coarser temporal resolution altimeters (10–35 days) for river heights and Synthetic Aperture Radar Data (7–25 days) for surface flooding with the advantage of capturing extreme events.

Keywords

Backscattering Coefficient, Brightness Temperature, River Water Level, Scatterometers, Soil Wetness.

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