Effect of infestation stage, form and treatment on fragment count in flour

Call number: LD2668 .T4 1979 S23Master of Scienc

Study of Mechanical Properties of Hybrid Natural Fiber Composite

The present experimental study aims at learning the mechanical behaviour of hybrid natural fiber composites. Samples of several Jute-Bagasse-Epoxy & Jute-Lantana camara-Epoxy hybrids were manufactured using hand layup method where the stacking of plies was alternate and the weight fraction of fibre and matrix was kept at 40%-60%.Specimens were cut from the fabricated laminate according to the ASTM standards for different experiments. For Tensile test & flexural test samples were cut in Dog-bone shape and flat bar shape respectively. After that experiment is performed under Universal testing machine (UTM). ILSS (flexural strength) & Tensile strength were observed and compared to base values of epoxy polymer to perceive the change in strength. SEM analysis was done to ascertain the mode of failure

Upheavals to scholarly communication have not embraced Robert Merton’s normative guide to good scientific research.

An impact-driven scholarly communication system may offer new levels of views for research and new metrics to assess these works, but are the upheavals actually reinforcing the cumulative advantage of those already in power? Drawing on Robert Merton’s norms for the production of science, Avtar Natt reframes current scholarly developments and finds the roots are too deep for a fair and equal system of knowledge production

Ain’t I A Woman? Revisiting Intersectionality

In the context of the second Gulf war and US and the British occupation of Iraq, many ‘old’ debates about the category ‘woman’ have assumed a new critical urgency. This paper revisits debates on intersectionality in order to show that they can shed new light on how we might approach some current issues. It first discusses the 19th century contestations among feminists involved in anti-slavery struggles and campaigns for women’s suffrage. The second part of the paper uses autobiography and empirical studies to demonstrate that social class (and its intersections with gender and ‘race’ or sexuality) are simultaneously subjective, structural and about social positioning and everyday practices. It argues that studying these intersections allows a more complex and dynamic understanding than a focus on social class alone. The conclusion to the paper considers the potential contributions to intersectional analysis of theoretical and political approaches such as those associated with post-structuralism, post-colonial feminist analysis, and diaspora studies

Interaction effects on prediction of children weight at school entry using model averaging

Model selection introduce uncertainty to the model building process, therefore model averaging was introduced as an alternative to overcome the problem of underestimate of standards error in model selection. This research also focused on using selection criteria between Corrected Akaike's Information Criteria (AICC) and Bayesian Information Criteria (BIC) as weight for model averaging when involving interaction effects. Mean squared error of prediction (MSE(P)) was used in order to determine the best model for model averaging. Gateshead Millennium Study (GMS) data on children weight used to illustrate the comparison between AICC and BIC. The results showed that model selection criterion AICC performs better than BIC when there are small sample and large number of parameters included in the model. The presence of interaction variable in the model is not significant compared to the main factor variables due to the lower coefficient value of interaction variables. In conclusion, interaction variables give less information to the model as it coefficient value is lower than main factor

Characterization and categorization of Indian mustard genotypes for agro-morphological traits

A total of sixty genotypes and germplasm lines were evaluated and characterized for 14 quantitative and 8 qualitative traits in Brassica juncea. Observations were recorded on the basis of scores given in the DUS descriptor. Majority of accessions were very late in maturity and medium in flowering. No variability was observed for leaf length and leaf width. On the basis of branches, most of the genotypes were classified under intermediate category. Long main shoot length (31), medium number of siliquae on main shoot (46), medium density on main shoot (52), short siliqua length (51), very tall plant height (38), few numbers of seeds per siliqua (33), medium 1000-seed weight (38), medium seed yield per plant (32) and low oil content (40) were observed in most of the genotypes. For qualitative traits, most of the genotype showed dark green leaf color, sparse hairs, dentation of leaf margin lyrate type, open leaf growth habit, yellow petal color, semi-appressedsiliqua angle with main shoot and intermediate siliqua surface texture. Wide (Yellow, Dull grey, Reddish brown, Brown and Black) diversity has been observed for seed color

Association analysis for yield and related traits in fenugreek (Trigonella foenum-graecum L.) under different environmental conditions

Sixteen diverse genotypes of fenugreek (Trigonella foenum-graecum L.) were grown in five (E1 to E5) environments which were created by different date of sowing during the rabi seasons at the Vegetable Farm of CCS HAU, Hisar. (29°15?N, 75°69?E) during 2012-13. Observations were recorded on ten randomly selected plants from each genotypes in each replications for characters viz. field emergence index, days to 50 % flowering, plant height, number of pods per plant, number of branches per plant, number of seeds per pod, pod length, seed yield (q/ha), test weight, seed germination, seed vigour index-I and II. The estimation of genotypic and phenotypic coefficients (GCV and PCV) variation in all the environments was consistently decreasing with the delaying in sowing date for all the character studied except plant height and test weight indicating that the environmental influence was comparatively more pronounced for these characters in expressing the phenotypic performance of different genotypes. Highest GCV and PCV was estimated as 50.36 % and 55.93 %, respectively for seed vigour index-I in E1. High value of heritability estimated for characters seed yield, seed vigour index-II, seed germination and branches per plant (above 70 %) in E1 revealed that these were less influenced by environment and low heritability estimated for days to 50 % flowering in E2, plant height in E2, seeds per pod in E3, field emergence index in E5 indicated high influence of environment. Based on environmental indices, the environment E2 was most favourable for all the characters studied except field emergence index

Acid-free microwave-assisted hydrothermal extraction of pectin and porous cellulose from mango peel waste-towards a zero waste mango biorefinery : Towards a Zero Waste Mango Biorefinery

Mango is the second most consumed tropical fruit after banana and the by-products of mango processing (peel, kernel and seed) roughly comprise 35-60% of the total fruit weight, thus representing a potentially high volume resource of exploitable biobased chemicals and materials. Herein, conversion and characterisation of waste mango peels from three different cultivars (Alphonso, Honey and Tommy Atkins) into pectin and porous cellulose using low temperature microwave-assisted acid-free hydrolytic conditions is reported. Microwave-assisted acid-free extraction yielded up to 11.63% (dry weight basis) of pectin which was characterised by IR, NMR (both solution and solid phase) and TGA which showed close similarity to commercial (acid extracted) pectin. The degree of esterification of pectin was determined by 13C NMR (75.6-86.2%) and titrimetry (79.3-87.7%) and the pectin showed excellent gelling ability. The molecular weight as determined by GPC was in the range 14130 (Honey)-25540 (Tommy Atkins). Porosity measurements on the depectinated residue, i.e., residual cellulosic matter showed mesoporous characteristics: average pore diameter, 9.3 nm (Alphonso)-10.5 nm (Honey), however with poor surface area 16.3 m2 g-1 (Honey)-26.0 m2 g-1. Interestingly, a second microwave hydrothermal treatment on these residues retained mesoporosity whilst significantly increasing surface area (88.8 m2 g-1 (Honey)-124.0 m2 g-1 (Alphonso)) and pore volume by approximately six-fold. This is the first detailed combined study of microwave-assisted extraction to yield pectin and mesoporous cellulose towards a potential zero waste mango biorefinery