http://nopr.niscpr.res.in/handle/123456789/62222 2026-10-08T12:17:50Z http://nopr.niscpr.res.in/handle/123456789/62997 Title: Study of genetic variation in agarophyte Gracilaria dura (Rhodophyta) through SSR markers Authors: Dawange, Pankaj S; Mantri, Vaibhav A; Jaiswar, Santlal Abstract: A study was conducted to explore the genetic diversity of the red agarophyte species Gracilaria dura, renowned for the production of high-quality agarose. Previous research has already established the potential for exploiting differences among life-history stages for commercial purposes. In order to gain deeper insights into the genetic makeup of this species, microsatellite (SSR) markers were employed, using specimens collected from Veraval and Adri in Gujarat, India. The study evaluated genetic diversity for three SSR loci, employing various measures such as polymorphic information content, marker index, resolving power, and Shannon Weaver index. The results revealed a range of values for these measures, with polymorphic information content ranging from 0.25 to 0.35, marker index from 0.45 to 0.92, resolving power from 2.89 to 4.14, and Shannon Weaver index from 2.29 to 3.2. This dataset represents the first comprehensive data on the genetic diversity of G. dura, which will greatly contribute to our understanding of population variations. This will pave the way for further investigations into the selection of strains and commercial cultivation of this algae. Page(s): 95-102 2023-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62996 Title: Exploring the factors affecting the intention of students in understanding physics through kinesthetic learning activity Authors: Acharjee, Soma Roy; Bhattacharya, Anuradha; Hemchandra, L Abstract: It has been proved statistically that present day students lack clear concepts about the subjects and topics which are abstract and thus it becomes important for the educators to devise innovative methods of teaching like the Kinesthetic Learning Activity (KLA). In this regard, the present study attempts to discuss the problem factors faced by the students in understanding Physics through KLA. Primary data were collected from 45 Class XI students with the help of an online questionnaire and were analyzed using Garrett Ranking Technique to obtain the best one. Findings show that "Difficult to picturize certain topics'' is the most important factor followed by "Lack of adequate time for conducting activity in the class" among the 13 possible factors identified. Page(s): 103-111 2023-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62995 Title: Polarographic determination of heavy metal lead in waste water in Jaipur Authors: Meena, Om Prakash Abstract: Electro analytical Procedure was developed for the trace determination of heavy metal lead inwaste water in Jaipur Rajasthan using Differential pulse polarography.ELICO CL-362 POLAROGRAPHIC ANALYSER (Make: Elico) was used for measurement of current voltage relationship (polarograms) on electrolyzing electroactiveanalytes in polarographic cell. This apparatus has three electrode assembly, dropping mercury electrode as working electrode, calomel as reference electrode and platinum as counter electrode. Dropping mercury electrode had the characteristics m = 2.422 mg/sec, t = 2.5 sec and h = 60 cm, under the conditions of Pulse Amplitude 50 mV and 6 mV/S scan ratewas used for electroanalysis measurements. Electro analysis of lead in waste water was performed in 0.10 M KNO3as correlation of determination (R2 = 0.999). Lead concentration in different water samples in Jaipur Rajasthan varies between 2.670 ppm to 5.757 ppm. Highest level of lead is reported in Sanganerteshil(Summer season) (5.797 ppm).From this research showed that the developed electroanalysis of lead in waste water using mercury drop electrode are accurate, precise, reproducible and inexpensive with acceptable the analysis of lead in waste water. This method is simplicity of sample preparation and use of low cost reagents are the additional benefit. Page(s): 112-116 2023-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62994 Title: Thar: Decreasing biodiversity, increasing desertification Authors: Maikhuri, Sandeep; Bhandari, Maneesh Singh; Jangra, Anamika; Bardthwal, Santan; Kumar, Parmanand; Meena, Rajendra Kumar Abstract: Thar Desert, also known as the 'Great Indian Desert' is the world's 17th largest and 9th largest undulating desert covered with sand dunes. It covers about 4.5% of the total geographical area of India. Almost every plant found in this area has various human useful importance from the medicinal and religious point of view. Ancient rural livelihood knowledge systems reflect time-tested techno-scientific knowledge with a proven track record of sustainability, especially during natural hazards, such as drought and famine. However, traditional cultural and socio-religious values are rapidly declining under the influence of the desert ecosystem, materialistic outlook, industrialization and development. The grasslands and rare biodiversity of the Aravalli region have slowly reached the verge of extinction, by the end of which the mountain will be left with only a structure of stones and rocks. To understand the reasons for the rapid expansion of this desert, the present study discusses the disparities in the vegetation of different parts of Rajasthan. Also, programs conducted from time to time by the Central / State Governments to prevent desertification and conserve forests are marked. All of these will contribute in understanding the history of desertification in India and identifying appropriate counter measures. Page(s): 117-125 2023-12-01T00:00:00Z