The present research was carried out in an ecologically fragile watershed of North-East India to comprehend the agricultural growth and development by quantifying its status employing several ...indicators, viz. physiological density, crop diversification, crop intensity and concentration. The study has demonstrated the use of primary data collected through extensive field surveys based on multistage sampling method in conjunction with a relevant secondary database. The findings revealed marked variation within the region in cropping patterns and associated aspects. The physiological density ranges between 1.91 to 85.54, cropping intensity ranges from 69.02% to 186.42%, crop diversification (6.42 to 100.14) and crop concentration (0.32 to 4.49), respectively. Continuous monitoring of the agricultural environment and adopting site-specific crop management practices supported by relevant information would boost the agricultural outcome and sustainability. Thus, the study would assist in framing guidelines to improve the agricultural landscape of the region.
Carbonyl-carbonyl (CO CO) n → π* interaction often coexists with a hydrogen bond (HB) or another n → π* interaction. Although the interplay between HB and n → π* interaction was previously studied, ...there is no systematic investigation that shows a synergistic relationship of n → π* with another noncovalent interaction. Herein, we have studied a set of proline-diacylhydrazine (Pro-DAH) molecules and observed that increase in the strength of the n
N
→ π*
Ar
interaction on their DAH side strengthened the n → π* interaction on the Pro side, which was experimentally determined by measuring the
K
trans
/
cis
of the Xaa-Pro amide bond. Overall, we describe a simple C-terminal modification strategy to stabilize the
trans
-Pro geometry that could be useful to stabilize PPII helices and collagen triple helices that require Pro to adopt the
trans
amide geometry.
A set of proline-diacylhydrazine hybrid molecules were designed and synthesized. Their conformational analyses showed a synergistic relationship between n → π* and n
N
→ π*
Ar
interactions, which played a key role in Xaa-Pro
trans
amide bond stabilization.
Carbonyl-carbonyl (CO⋯CO) n → π* interaction often coexists with a hydrogen bond (HB) or another n → π* interaction. Although the interplay between HB and n → π* interaction was previously studied, ...there is no systematic investigation that shows a synergistic relationship of n → π* with another noncovalent interaction. Herein, we have studied a set of proline-diacylhydrazine (Pro-DAH) molecules and observed that increase in the strength of the n
→ π*
interaction on their DAH side strengthened the n → π* interaction on the Pro side, which was experimentally determined by measuring the
of the Xaa-Pro amide bond. Overall, we describe a simple C-terminal modification strategy to stabilize the
-Pro geometry that could be useful to stabilize PPII helices and collagen triple helices that require Pro to adopt the
amide geometry.
Carbonyl–carbonyl (CO⋯CO) n → π* interaction often coexists with a hydrogen bond (HB) or another n → π* interaction. Although the interplay between HB and n → π* interaction was previously studied, ...there is no systematic investigation that shows a synergistic relationship of n → π* with another noncovalent interaction. Herein, we have studied a set of proline-diacylhydrazine (Pro-DAH) molecules and observed that increase in the strength of the nN → π*Ar interaction on their DAH side strengthened the n → π* interaction on the Pro side, which was experimentally determined by measuring the Ktrans/cis of the Xaa–Pro amide bond. Overall, we describe a simple C-terminal modification strategy to stabilize the trans-Pro geometry that could be useful to stabilize PPII helices and collagen triple helices that require Pro to adopt the trans amide geometry.
Land of rivers, India annually faces the perennial problems of flood and siltation basically along the flood plain region since millennia. Situated on a tectonically active zone and transversed by ...the Brahmaputra and Barak river system, Assam has been recognized as the worst sufferer. Increasing magnitude and devastation of the hazard is much owed due to the great earthquake of 1950 along with both natural and human-induced factors and activities. The regions located at upper Brahmaputra valley are frequently inundated and eroded wiping away vast areas of cropland, properties, and human lives. As such, the Lakhimpur district of Assam faces similar havoc each year with massive destruction leaving many people helpless and homeless. The people living in the rural areas of the district had to struggle hard to sustain their lives and livelihoods and thus, adopted their indigenous or traditional ways and means of coping with the floods. This paper, therefore, attempts to study the causes and impacts of floods caused by the river Singri, a sub-tributary of the Brahmaputra river on the inhabitants of Dolokhat village located in Lakhimpur district. This study also takes into account the differential shifting patterns of the river for a period of 12 years from 2005 to 2017, wherein highest erosion was observed during 2017 eroding 22.60 hectares of land displacing people and livestock. The study was undertaken using both primary and secondary sources of information. Data and information collected have been processed and analyzed using Google Earth Pro, ArcGIS 10.9.2, Microsoft Word and Microsoft Excel. Such information will enable the planners, policy-makers, geomorphologists, etc. in targeted solutions and strategies to initiate measures and mitigate such problems so that the adverse effects of floods could be reduced to a certain extent.
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