Traditional use of medicinal plants by the Jaintia tribes in North Cachar Hills district of Assam, northeast India

The study of ethnobotany relating to any tribe is in itself a very intricate or convoluted process. This paper documents the traditional knowledge of medicinal plants that are in use by the indigenous Jaintia tribes residing in few isolated pockets of northeast India. The present study was done through structured questionnaires in consultations with the tribal practitioners and has resulted in the documentation of 39 medicinal plant species belonging to 27 families and 35 genera. For curing diverse form of ailments, the use of aboveground plant parts was higher (76.59%) than the underground plant parts (23.41%). Of the aboveground plant parts, leaf was used in the majority of cases (23 species), followed by fruit (4). Different underground plant forms such as root, tuber, rhizome, bulb and pseudo-bulb were also found to be in use by the Jaintia tribe as a medicine. Altogether, 30 types of ailments have been reported to be cured by using these 39 medicinal plant species. The study thus underlines the potentials of the ethnobotanical research and the need for the documentation of traditional ecological knowledge pertaining to the medicinal plant utilization for the greater benefit of mankind

The dynamic geophysical environment of (101955) Bennu based on OSIRIS-REx measurements

The top-shaped morphology characteristic of asteroid (101955) Bennu, often found among fast-spinning asteroids and binary asteroid primaries, may have contributed substantially to binary asteroid formation. Yet a detailed geophysical analysis of this morphology for a fast-spinning asteroid has not been possible prior to the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission. Combining the measured Bennu mass and shape obtained during the Preliminary Survey phase of the OSIRIS-REx mission, we find a notable transition in Bennu’s surface slopes within its rotational Roche lobe, defined as the region where material is energetically trapped to the surface. As the intersection of the rotational Roche lobe with Bennu’s surface has been most recently migrating towards its equator (given Bennu’s increasing spin rate), we infer that Bennu’s surface slopes have been changing across its surface within the last million years. We also find evidence for substantial density heterogeneity within this body, suggesting that its interior is a mixture of voids and boulders. The presence of such heterogeneity and Bennu’s top shape are consistent with spin-induced failure at some point in its past, although the manner of its failure cannot yet be determined. Future measurements by the OSIRIS-REx spacecraft will provide insight into and may resolve questions regarding the formation and evolution of Bennu’s top-shape morphology and its link to the formation of binary asteroids

Evidence for widespread hydrated minerals on asteroid (101955) Bennu

Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7 µm and thermal infrared spectral features that are most similar to those of aqueously altered CM-type carbonaceous chondrites. We observe these spectral features across the surface of Bennu, and there is no evidence of substantial rotational variability at the spatial scales of tens to hundreds of metres observed to date. In the visible and near-infrared (0.4 to 2.4 µm) Bennu’s spectrum appears featureless and with a blue (negative) slope, confirming previous ground-based observations. Bennu may represent a class of objects that could have brought volatiles and organic chemistry to Earth

Standardization of screening techniques for resistance to <em>Lipaphis erysimi</em> (Kalt.) in rapeseed-mustard under field conditions

674-685The population and damage by aphid, Lipaphis erysimi (Kalt.) in Brassica spp. is highly variable across seasons and regions, wherein screening of rapeseed-mustard genotypes under natural infestation conditions has not been rewarding for aphid resistance. Since no reliable screening technique is in place, we developed and evaluated various screening techniques to differentiate diverse mustard genotypes for resistance to L. erysimi under field conditions. Artificial infestation at bud formation stage with 20 mixed stage aphids pinned with bell pins on the top third branch near inflorescence was found most appropriate and effective for establishment of aphids at inoculation site. Evaluation of mustard genotypes under multi-choice natural infestation revealed maximum variability in L. erysimi resistance indices, but plot cage artificial screening technique was found appropriate over natural infestation for multi-choice assays. Genotypes Heera and PDZM 31 showed susceptible to highly susceptible reaction against L. erysimi under all the artificial infestation screening techniques. However, PM 30, PM 21, Pusa Bold and Pusa Vijay displayed variable resistance reactions under different screening techniques. Although no-choice twig cage and plant cage techniques showed significant differences in test mustard genotypes for various aphid resistance indices, the twig cage technique revealed maximum variability and could differentiate them at slightest variation in levels of tolerance/susceptibility to L. erysimi. The rate of L. erysimi multiplication on test mustard genotypes was highly variable under plant cage as compared to twig cage. The twig cage technique also successfully differentiated the double low erucic acid and total glucosinolate, single low erucic acid, and conventional varieties with high erucic acid and total glucosinolate groups of mustard genotypes for L. erysimi resistance. The multiplication rate and ease in scouting of aphids, easy handling and cost of the cage, and natural plant growth conditions are some of the most favourable factors, suggesting twig cage technique more précised, realistic, economical, and efficient for artificial screening of rapeseed-mustard for resistance against the aphid L. erysimi infestation

Perioperative platelet inhibition in transurethral interventions: TURP/TURB

PURPOSE: To determine whether transurethral surgery under platelet inhibition is a feasible procedure. Before transurethral resection of prostate (TURP) or bladder tumours (TURB), the administration of platelet-inhibiting medication is often interrupted due to possible bleeding complications. We studied the performance of TURP and TURB under the current recommendations of the American College of Chest Physicians (ACCP) on perioperative platelet inhibition. MATERIALS AND METHODS: Patients assigned for transurethral intervention were preoperatively divided into the following risk groups: low, medium and high cardio- or cerebrovascular risk. In patients with a low-risk profile, acetylsalicylic acid (ASA) was discontinued. Patients of the medium risk group continued taking 100 mg of ASA. Patients of the high-risk group receiving dual platelet inhibition (ASA + clopidogrel) were not treated operatively. In total 346 patients from the low and medium risk groups underwent transurethral intervention. RESULTS: Forty-two out of 198 TURP were performed under 100 mg of ASA. Without ASA, a significantly shorter length of stay and earlier removal of the transurethral catheter was documented. In the parameters postoperative haemorrhage and operative revision, no significant differences were observed. Thirty-two out of 148 TURB were performed under 100 mg of ASA. Regarding the length of stay, time until catheter removal, postoperative haemorrhage and operative revision, no significant differences were found under ASA. Only significantly longer continuous irrigation was documented under ASA. CONCLUSION: In the case of a verified indication for use of platelet inhibitors, it is possible to avoid discontinuation and the consequent increased risk of thromboembolic incidents in transurethral surgery is admissible