नीली क्रांति में मानव संसाधन विकास की भूमिका

कृपया पूरा लेख पढे

Preparation and ultrasonic study of sodium potassium tantalate (Na1-xKxTaO3) mixed system

Ultrasonic velocity of the piezoelectric ceramic pellets of ferroelectric material Na1-xKxTaO3 (X=0, 0.2, 0.3, 0.4, 0.5, 0.6 and 1.0) have been investigated at temperature 32 ºC and frequency 5 MHz with the help of ultrasonic c-scan system developed at NPL, New Delhi. The samples have been prepared by the conventional solid-state reaction method and sintering process

Exploitation of combining ability and heterosis for development of maize hybrids for tarai region of Uttarakhand

The present investigation was carried out with fifty six genotypes involving 10 parents, their 45 F1s hybrids and one check hybrid in tarai region of Uttarakhand. The presence of more amount of variance due to SCA effects than GCA effects in our experimental material indicated that heterosis breeding is better choice. The good general combiners were P1, P3 and P4 for ear length; P8 for ear diameter; P5 and P8 for number of kernel rows per ear; P1 and P4 for number of kernels per row, P8 and P9 for100-kernel weight and P5 for grain yield, which can be utilized directly or indirectly in breeding programme. The best eight specific combiners for grain yield were P1xP8, P4xP10, P7xP8, P5xP8, P5xP9, P4xP9, P1xP2 and P5xP10 involving average x average, good x average, good x poor and average x poor parental combinations of generalcombining ability indicating the presence of non-additive gene action. The nine crosses, P1xP2, P1 xP5, P1xP8, P4xP9, P4xP10, P5 xP8, P5xP9, P5xP10 and P7xP8 had positive significant per cent heterosis for grain yield, and crosses namely P1xP4, P1xP5 and P1xP8 for ear length; P1xP3 and P1xP5 for number of kernels per row and P1xP8 and P9x P10 for 100-kernel weight were having positive significant per cent heterosis at 1% and/or 5% level of significance for respective traits. The crosses, P1xP2, P1xP8, P4xP9 andP7xP8 manifested high SCA effects along with excellent standard heterosis and per se performance for grain yield and also for most of the studied characters, therefore, classified as potential hybrids

PHYTOCHEMICAL SCREENING AND ANTI-TRICHOSPORON ACTIVITY OF PLUMBAGO ZEYLANICA LINN

Objective: To evaluate the anti-Trichosporon activity of a medicinal plant, Plumbago zeylanica Linn and to find out the phytochemicals responsible for this activity with the use of four solvent extracts; methanol, ethanol, acetone and chloroform. Methods: To evaluate the antifungal activity, two methods were used. Agar well diffusion assay to determine the diameter of zone of inhibition (in mm) and MIC (in mg/ml) was determined through Tube dilution broth assay. Phytochemical screening for preliminary analysis of secondary metabolites was done through chemical methods. Results: Trichosporon asahii was found to be most sensitive to methanol extract of P. zeylanica with inhibition zone of 35 mm and T. inkin with 30 mm zone of inhibition. MIC results also showed that the methanol extract was most effective in lowest concentration against T. asahii with MIC at 6.2 mg/ml and inhibited T. inkin at 25 mg/ml. Phytochemical screening of plant extracts revealed the presence of certain phyto-constituents like alkaloids, steroids, flavonoids, phenols, glycosides, tannins etc. Conclusion: The present study proved the sensitivity of the yeast Trichosporon spp. to different extracts of P. zeylanica. T. asahii was found to be more sensitive towards the extracts. Methanol extract proved to be most effective compared to ethanol, acetone and chloroform as it gave the maximum zones and lowest MIC result. Phytochemical analysis proved the presence of certain phytochemicals which was responsible for their antifungal activity

Analysis of densification mechanisms of dry granulated materials

International audienceDry granulation by roll compaction is a continuum manufacturing process to produce granules with improved flowability which can further be easily used in tableting process. However, the granules are non-homogeneous in density and have non-spherical shapes which impact their densification behaviour during die-compaction. The aim of this study was to investigate both the densification mechanism and the failure strength of granules of microcrystalline cellulose (MCC) and mannitol using Cooper-Eaton and Adams models. For both materials, the Cooper-Eaton approach led to the quantification of fractional volume compaction by particle rearrangement and by plastic deformation respectively to explain the difference in densification behaviour of raw material and granules. Moreover, the model showed its ability to capture the effect of granule density and granule sizes and to differentiate the densification mechanisms of MCC as a plastic material and mannitol as a brittle material. The Adams model was used to compute the failure strength of single granule from in-die compression data. The obtained results of the granules were in the range [0.6–1.43  MPa]. However, regarding the effect of granule density, the model showed mixed results indicating that the model is not representative of the studied granules which are not spherical and have a relatively wide range of sizes, nevertheless, the model was derived for near spherical particles with a narrow size distribution

Effect of Common Vegetables on Thyroid Function in Rats-A Preliminary Study

Goitrogenic potency of some vegetables of Delhi were studied in rats. Adult male rats were fed separately on thiouracil, thiocyanate and extracts of carrot, cabbage and turnip procured from Delhi market for 26 days. Cabbage and turnip showed high thiocyanate contents while carrot did not show any measurable amount. Appreciable increase in thyroid weight to body weight ratio, plasma thiocyanate, plasma/sup 131/1 contents and protein bound/sup 131/ 1 or plasma were observed in all groups of experimental, rats, except carrot. Results indicated goitrogenic nature of cabbage and turnip in rats

Medicinal and economic uses of some introduced plant species and their conservation in the Botanic Garden of Indian Republic, Noida

Plants are an important part of human communities and their conservation should be done on priority basis. These plant species have been used for medicinal and economic purposes by the tribal human communities for many centuries. In the 21st century, many such plant species are under threat due to loss of habitats, over-exploitation, alien/invasive species and several other anthropogenic reasons. Thus, these plant species need to be conserved for the future generations before their permanent extinction from the planet earth. The Botanic Gardens have a very important role in their conservation. In the present study, an attempt has been made to conserve such medicinally and economically important plants at the Botanic Garden of Indian Republic (BGIR), Noida. Many plant species from all over India have been introduced in this garden for conservation since 2002. Out of them, a total of 51 species were selected and their medicinal and economic uses were studied and evaluated during the study along with other details like Hindi names, areas of distribution in India, and flowering and fruiting period at the BGIR. More details like the type of diseases treated from these plant species and particular plant parts used for the treatment have also been discussed. This paper will provide a comprehensive study of the uses of plant species conserved in the Botanic Garden from different phytogeographical regions of India

Hypothalamic Α 2 -Noradrenergic Receptor System Relation to Dietary, Genetic, and Hormonally Induced Obesity

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73970/1/j.1749-6632.1989.tb53313.x.pd

Medicinal and economic uses of some introduced plant species and their conservation in the Botanic Garden of Indian Republic, Noida

795-803Plants are an important part of human communities and their conservation should be done on priority basis. These plant species have been used for medicinal and economic purposes by the tribal human communities for many centuries. In the 21st century, many such plant species are under threat due to loss of habitats, over-exploitation, alien/invasive species and several other anthropogenic reasons. Thus, these plant species need to be conserved for the future generations before their permanent extinction from the planet earth. The Botanic Gardens have a very important role in their conservation. In the present study, an attempt has been made to conserve such medicinally and economically important plants at the Botanic Garden of Indian Republic (BGIR), Noida. Many plant species from all over India have been introduced in this garden for conservation since 2002. Out of them, a total of 51 species were selected and their medicinal and economic uses were studied and evaluated during the study along with other details like Hindi names, areas of distribution in India, and flowering and fruiting period at the BGIR. More details like the type of diseases treated from these plant species and particular plant parts used for the treatment have also been discussed. This paper will provide a comprehensive study of the uses of plant species conserved in the Botanic Garden from different phytogeographical regions of India

Taboos: Traditional beliefs and customs for resource management in the western Himalaya

575-581People residing in interior areas of the Himalaya are highly dependent on natural resources and thus have evolved their own beliefs and customs, the taboos, for conserving resources. Taboos form an important component of tribal lifestyle and guide sustainable utilization and management of natural resources. The present study was carried out in the higher reaches of Himachal Pradesh that are known for their rich bio-cultural diversity. The study aimed at documenting and classifying taboos prevalent in the area. For this, field surveys were carried out and interactions were held with the local people (n=210) using semi-structured interviews and focus group discussions. The results revealed a prevalence of 22 taboos that were mainly related to forest, water, farmland, and food resources. Of the total taboos, the maximum belonged to the segment and method category taboos (32% each) while the minimum (5%) were species-specific taboos. Adherence to taboos is high and breaking them is believed to bring the wrath of God. They, thus, are important for resource management. Studies targeting the history of taboos and their policy implications are much desired