4,172 research outputs found
Micromyzus granotiae A.K. Ghosh, M.R. Ghosh & Raychaudhuri 1970
No full textMicromyzus granotiae A.K. Ghosh, M.R. Ghosh & Raychaudhuri 1970 = Kaochiaoja arthraxonis (Takahashi 1921) We place Micromyzus granotiae, described from Garnotia sp. (?) in West Bengal, as a synonym of Kaochiaoja arthraxonis because it is clearly part of the same group, although it was described as dark brown in life with a dusky head and a coating of wax, whereas K. arthraxonis was described as shining dark brown with yellowish brown head. Apterae of Japanese populations on various Gramineae (e.g. Microstegium, Digitaria) currently regarded as K. arthraxonis were described as salmon pink to reddish brown in life, with a black head and dorsal abdominal patch (Miyazaki 1971, as K. pollinae). Further work is needed to establish whether or not this is all one variable species.Published as part of Victor, Eastop, F. & Blackman, Roger L., 2005, Some new synonyms in Aphididae (Hemiptera: Sternorrhyncha), pp. 1-36 in Zootaxa 1089 on page 15, DOI: 10.5281/zenodo.27334
Micromyzus brachiariae A.K. Ghosh 1978
No full text<i>Micromyzus brachiariae</i> A.K. Ghosh 1978 = <i>Pentalonia gavarri</i> Eastop 1967 <p> Specimens in the BMNH collection presumed to have been collected from <i>Brachiaria</i> sp. (although the host­plant is not explicitly stated) in India (Assam), and having the same data as those in the published description of <i>Micromyzus brachiariae</i>, show close agreement with <i>Pentalonia gavarri</i> Eastop, occurring on grasses in south­east Asia and Australia.</p>Published as part of <i>Victor, Eastop, F. & Blackman, Roger L., 2005, Some new synonyms in Aphididae (Hemiptera: Sternorrhyncha), pp. 1-36 in Zootaxa 1089</i> on page 15, DOI: <a href="http://zenodo.org/record/273344">10.5281/zenodo.273344</a>
Effect of Arsenic on Photosynthesis, Growth and its Accumulation in the Tissues of Allium cepa (Onion)
No full textArsenic is a well known carcinogenic element, that can harm not only human health but, plant and bacteria as well. Replicated experiments confirmed that, Arsenic accumulates in the different tissues in different parts of the plant and, adversely affects the growth and productivity of the plants. It is a threat for millions of population in terms of health and food security both. Therefore, a pot experiment was designed and conducted to investigate the effect of arsenic on photosynthetic pigments, Chlorophyll-a and –b, growth behavior, and its accumulation in the tissues of different parts of onion plants (Allium cepa). Test plants were subjected to pot experiment under natural conditions. Four pots were prepared to grow onion plants, irrigated with equal volume of different Arsenic solution (NaAs3), 0.00 mg/l, 0.200mg/l, 0.600mg/l, and 0.800mg/l concentration with one pot for control respectively, throughout the experiments. Both chlorophyll-a and -b contents in onion leaf increased significantly with the increase of water arsenic concentrations. The highest chlorophyll-a (0.004847/g) and chlorophyll-b (0.006528/g) contents were estimated in the onion leaf irrigated with 0.800mg/l of Arsenic whereas, in control plant it was lowest (chl-a 0.002363/ and chl-b 0.004092/g). A high positive correlation was observed between water arsenic (R2= 0.897 and 0.963) & soil arsenic (R2= 0.926 and 0.919) with chlorophyll-a and chlorophyll-b respectively. High positive correlation was also observed even for onion growth verses soil arsenic and water arsenic (R2=0.994 and 0.968) and water Arsenic with leaf biomass (R2=0.973) respectively. However, no Arsenic accumulation was detected in the tissues of different parts of the onion plants suggesting that, arsenic (NaAs3) influenced the 40 K. Singh Sushant and A.K. Ghosh biochemistry of photosynthesis which ultimately resulted in the increase of onion growth and yield. Onion plants can be cultivated in the area where Arsenic containing water is being utilized for irrigating crops but, a chain of in-vitro studies are required to understand the biochemistry and mechanism that influenced growth and productivity of the onion plants.Technology, Policy and Managemen
A higher order assumed strain finite element for transient analysis of initially stressed composite sandwich plates
No full textDynamics of Organic Carbon Molecules in Oxbow Lakes of Gangetic Plains
No full textThe Ganges Delta is a key area where elemental contamination of groundwater constitutes a human catastrophe. The delta plain geomorphology comprises a large number of abandoned meander bends or oxbow lakes (Donselaar et al., 2017; Ghosh et al., 2021) characterized by an anoxic environment in the lower part of the lake water column (hypolimnion). Here we present the critical role of these abandoned-river channels forming oxbow lakes. The geomorphological the juxtaposition of (a) abandoned channels (or: oxbow lakes) where the cocktail of organic matter and sediment leads to the release of various elements, (b) the topographically higher point bars where the released elements accumulate in the aquifer and provide a blueprint to explain the origin and localization of elemental toxicity. Dissolved organic matter (DOM) is implicated in the mobilization of elements via microbial metabolic processes. Organic matter (OM) is preserved in this environment and provides a perfect environment for microbial oxidation and mobilization of Fe-oxides. Additional deposition of human-introduced sewage wastes adds to a rich source of nutrients to the indigenous microbial communities.A multidisciplinary approach was effective in understanding the geomorphology of river meanders, forming abandoned channels, which act as a growth bed for biomass. While acting as an incubator for primary production (lake vegetation dynamics), and subsequent organic debris accumulation (anoxic, hypolimnion water column), where selective preferential preservation of organic carbon compound (anoxic sediment base) occur. We have described how organic compound infiltration, deposition and abundance depends on their hydrophobicity, molecular weights and bioavailability and further, due to diagenetic alteration (microbial metabolic oxidation). Different classes of surface derived organic carbon from vegetation with anthropogenic inputs, can have different effects on the mineral weathering and in controlling the downstream cationic fluxes such as Fe, Mn, As, F etc. and contamination of aquifers in various river plains across the world.Applied Geolog
On the feasibility of using a continuous processing technique incorporating a limited strain imposed by ECAP
No full textEqual-channel angular pressing (ECAP) is used extensively in many laboratories for the production of metallic alloys having grain sizes in the submicrometer or nanometer range. However, the ECAP process is discontinuous and it is not easily adopted for use in commercial forming operations. Attempts have been made to overcome this limitation by incorporating a single ECAP step, equivalent to an imposed strain of 1, into continuous production runs based primarily on alternative industrial procedures such as rolling. Experiments on commercial-purity aluminum and a series of Al–Mg solid solution alloys show this is a feasible approach because very significant strengthening is introduced into bulk solids in the first pass, often leading to an increase in strength by a factor of about 2. However, these low strains are not sufficient to produce materials suitable for use in superplastic forming operations
Population heterogeneity in trajectories of midlife blood pressure
No full textBackground: We investigated whether there are subgroups with different underlying (latent) trajectories of midlife systolic blood pressure (BP), diastolic BP, and pulse pressure in a UK cohort.Methods: Data are from 1840 men and 1819 women with BP measured at ages 36, 43, and 53 years. We used unconditional growth mixture models to test for the presence of latent trajectory classes. Extracted classes were described in terms of a number of known lifetime risk factors, and linked to the risk of undiagnosed angina (Rose questionnaire) at age 53 years.Results: In both sexes for systolic BP, diastolic BP, and pulse pressure, there was a large "normative" class (>90% of the sample) characterized by gentle annual increases (eg, an increase in male systolic BP of 0.9 mm Hg/year [95% confidence interval = 0.9 to 1.0]), with a smaller class for whom the rate of increase was high (eg, an increase in male systolic BP of 3.1 mm Hg/year [2.8 to 3.4]). In women, there was an additional class for whom BP was high at age 36 and remained high. Persons in the "normative" classes were, on average, heavier at birth and taller at age 7 years, had a lower midlife body mass index, and were less likely to be on antihypertensive medication compared with those in other classes. Among those with no diagnosed cardiovascular disease, those in the classes with more strongly increasing systolic BP and pulse pressure were at greatest risk of angina.Conclusion: Our study suggests that in midlife the majority of the population have a gentle underlying increase in BP, but that there also exists an important subgroup in whom BP increases much more markedly. These classes may be useful for identifying those most at risk for cardiovascular disease.<br/
Flow over partially liquid filled cavity
No full textExperiments have been carried out to investigate the effect of liquid cavity filling on the behavior of the gas flow over a flat plate cavity. PIV measurements in the gas phase reveal that cavity filling can affect vortex shedding in the cavity mouth. Shear layer vortices can break-up into smaller vortices, thereby losing their periodic interaction with the aft wall and, hence, their sound producing potential. Expected is that this is one of the mechanisms causing sound mitigation in corrugated pipes with liquid addition, observed in literature
ADOPTION OF A CHILD WITHOUT CONSENT OF ITS PARENT WITH A INTELLECTUAL DISABILITY : CASE OF A.K. AND L. v. CROATIA
No full textThis paper discusses the matter of parents prior right to provide his/her child with care in situations in which a child’s parent is a person with intellectual disabilities. The author analyzes the case of A.K. and L. v. Croatia in which European Court of Human Rights concluded that it come to violation of the right to family life of A.K, a mother with an intellectual disability and her son L., who was adopted without the mother’s consent. The paper presents a critical review of Croatian family law in a matter of a parent’s consent for an adoption when the parent is a person with intellectual disabilities. By connecting contemporary standpoints of the European Court of Human Rights and the latest scientific knowledge about the ability of persons with intellectual disabilities to take care of their child, the author discusses a possible conflict between the principle of child’s best interest and the priority right of a parent to take care of his/her child. Also, the author warns about the danger of a parent with intellectual disabilities being deprived of his/her parental rights and completely excluded from the process of adoption even in situations when the parent could, with adequate professional help and support, maintain a family relationship with the child. From that perspective the author also discusses the latest reforms of the family law concerning protection of parental rights of persons deprived of their capacity for work
- …
