scholarly journals ALGAL DISTRIBUTION AND ITS ABUNDANCE IN PUTHALAM SALTWORKS, KANYAKUMARI DISTRICT, TAMIL NADU

2015 ◽  
Vol 2 (2) ◽  
pp. 88-91
Author(s):  
Laila banu, N.R ◽  
Reginald M
Keyword(s):  
Tamil Nadu ◽  
Algal Species ◽  
Nutrient Status ◽  
Gradual Reduction ◽  
Wide Range ◽  
Brine Chemistry ◽  
Different Seasons ◽  
Crystallizer Pond ◽  
Major Variation ◽  
Algal Distribution

Saltworks are important wetlands and exposed to wide range of environmental stress and perturbations. Fluctuations of salinity, brine chemistry and nutrient status leads to variation in microalgal population. The typical saltworks Sri Sankara Allom, Puthalam was chosen for the study. The investigation was aimed to list out the microalgae and calculates their abundance. The work was done in different seasons (I, II, III and IV) of the study period (March 2009 to February 2010). The reservoir pond showed major variation among micro algal species but it was low in condenser pond. Only two micro algal species were observed in crystallizer pond. A gradual reduction in number of micro algal species was observed with an increase in salinity. With regard to crystallizer, Dunaliella was the dominant one throughout the study period.

scholarly journals A Threat of Farmers’ Suicide and the Opportunity in Organic Farming for Sustainable Agricultural Development in India

2019 ◽  
Vol 11 (8) ◽  
pp. 2400 ◽  
Author(s):  
Karthikeyan Mariappan ◽  
Deyi Zhou
Keyword(s):  
Organic Farming ◽  
Tamil Nadu ◽  
Agricultural Development ◽  
Small Scale ◽  
Conventional Farming ◽  
Wide Range ◽  
Significant Difference ◽  
Small Scale Farmers ◽  
The Cost ◽  
Input Cost

Agriculture is the main sources of income for humans. Likewise, agriculture is the backbone of the Indian economy. In India, Tamil Nadu regional state has a wide range of possibilities to produce all varieties of organic products due to its diverse agro-climatic condition. This research aimed to identify the economics and efficiency of organic farming, and the possibilities to reduce farmers’ suicides in the Tamil Nadu region through the organic agriculture concept. The emphasis was on farmers, producers, researchers, and marketers entering the sustainable economy through organic farming by reducing input cost and high profit in cultivation. A survey was conducted to gather data. One way analysis of variance (ANOVA) has been used to test the hypothesis regards the cost and profit of rice production. The results showed that there was a significant difference in profitability between organic and conventional farming methods. It is very transparent that organic farming is the leading concept of sustainable agricultural development with better organic manures that can improve soil fertility, better yield, less input cost and better return than conventional farming. The study suggests that by reducing the cost of cultivation and get a marginal return through organic farming method to poor and small scale farmers will reduce socio-economic problems such as farmers’ suicides in the future of Indian agriculture.

Diet of European freshwater pearl mussels Margaritifera margaritifera (Mollusca: Bivalvia: Unionoida) in small river (Republic of Karelia, Russia)

2021 ◽  
Vol 325 (4) ◽  
pp. 502-515
Author(s):  
S.F. Komulaynen
Keyword(s):  
Algal Species ◽  
Dry Weight ◽  
Lake Ladoga ◽  
Total Biomass ◽  
Margaritifera Margaritifera ◽  
Pearl Mussel ◽  
Organic Detritus ◽  
Unicellular Algae ◽  
Wide Range ◽  
Intestinal Contents

The freshwater pearl mussel Margaritifera margaritifera (Linnaeus,1758) is endangered in Europe and is now listed in the Red Data Book of many countries and regions. The diet of the species in the Syskyänjoki River (a tributary of Lake Ladoga) has been studied. The contents of the intestine generally correspond to the composition of seston, and include organic detritus, filamentous and unicellular algae, fragments of invertebrates and macrophyte tissues mixed with silt and sand. The total biomass of the intestinal contents of varied from 0.8 to 30.6 mg per organism (absolutely dry weight). Margaritifera margaritifera consumes a wide range of particles, from 0.5 μm3 (bacteria and unicellular algae) to 200 000 μm3 (fragments of invertebrates and macrophyte tissues). About 90–95% (by volume) of the intestinal contents was consisted by fine organic detritus. The food composition did not differ significantly for mollusks of different sexes and size. In the intestinal contents, 63 taxa of algae were identified. The number of algal species in the content of one intestine varied from 3 to 17, with their abundance from 250 to 9560 cells per organism. The most abundant and constant in the contents of the intestines are unicellular algae. Diatoms are the most diverse, they make up 50.8% of the total number of species.

Parasaissetia nigra. [Distribution map].

1997 ◽  
Author(s):  
Keyword(s):  
Tamil Nadu ◽  
New Caledonia ◽  
Solomon Islands ◽  
French Polynesia ◽  
American Samoa ◽  
Virgin Islands ◽  
Peninsular Malaysia ◽  
Distribution Map ◽  
Brunei Darussalam ◽  
Wide Range

Abstract A new distribution map is provided for Parasaissetia nigra (Nietner) Homoptera: Coccoidea: Coccidae Attacks a wide range of crops, fruit trees and ornamental plants. Information is given on the geographical distribution in EUROPE, Portugal, Azores, Madeira, Spain, Canary Islands, ASIA, Bangladesh, Bhutan, Brunei Darussalam, China, Yunnan, Hong Kong, India, Andaman and Nicobar Islands, Assam, Bihar, Gujarat, Haryana, Himachal Pradesh, Karnataka, Kerala, Maharashtra, Punjab, Tamil Nadu, Tripura, Uttar Pradesh, West Bengal, Indonesia, Java, Sulawesi, Sumatra, Israel, Japan, Ryukyu Archipelago, Lao, Malaysia, Peninsular Malaysia, Sabah, Sarawak, Maldives, Mongolia, Myanmar, Nepal, Pakistan, Philippines, Saudi Arabia, Singapore, Sri Lanka, Taiwan, Thailand, Vietnam, Yemen, AFRICA, Angola, Benin, Burkina Faso, Cameroon, Cape Verde, Chad, Comoros, Congo, Cote d'Ivoire, Egypt, Eritrea, Ghana, Guinea, Kenya, Madagascar, Mauritius, Mozambique, Namibia, Nigeria, Reunion, Sao Tome & Principe, Seychelles, Sierra Leone, South Africa, St Helena, Sudan, Tanzania, Uganda, Zaire, Zambia, Zimbabwe, NORTH AMERICA, Mexico, USA, Alabama, California, Florida, Hawaii, Kansas, Louisiana, Maryland, Missouri, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Texas, Virginia, CENTRAL AMERICA & CARIBBEAN, Antigua and Barbuda, Barbados, Bermuda, British Virgin Islands, Costa Rica, Cuba, Dominican Republic, El Salvador, Grenada, Guadeloupe, Guatemala, Honduras, Jamaica, Martinique, Nicaragua, Panama, Puerto Rico, St Lucia, St Vincent and Grenadines, Trinidad and Tobago, United States Virgin Islands, SOUTH AMERICA, Argentina, Bolivia, Brazil, Minas Gerais, Rio Grande do Sul, Colombia, Ecuador, Guyana, Peru, Venezuela, OCEANIA, American Samoa, Australia, New South Wales, Northern Territory, Queensland, Victoria, Western Australia, Cocos Islands, Cook Islands, Fed. Stales of Micronesia, Fiji, French Polynesia, Guam, Kiribati, Nauru, New Caledonia, New Zealand, Niue, Norfolk Island, Palau, Papua New Guinea, Samoa, Samoan Islands, Solomon Islands, Tonga, Tuvalu, Vanuatu, Wallis and Futuna Islands.

scholarly journals Physicochemical Properties and Heavy Metal Concentration in Soil of Industrial Area, Zirani, Savar, Dhaka

2015 ◽  
Vol 8 (1) ◽  
pp. 65-68 ◽  
Author(s):  
MS Rahaman ◽  
F Nessa ◽  
MM Hoque ◽  
M Rehnuma ◽  
MS Islam
Keyword(s):  
Heavy Metals ◽  
Agricultural Production ◽  
Reference Value ◽  
Nutrient Status ◽  
Heavy Metal Concentration ◽  
Industrial Area ◽  
Total N ◽  
Maximum Value ◽  
Wide Range ◽  
Recommended Level

Zirani of Savar is an important industrial area of the country which provides wide range of potentiality for economic development. The purpose of the study was to observe the nutrient status and heavy metals concentration of the soil in Zirani, Savar, Dhaka. Nine soil samples were collected and analyzed through different methods for analyzing pH, OC, N, K, P, S and the heavy metals including Zn, Cd, Cu, and Pb, were investigated using Atomic Absorption Spectroscopy (AAS) technique. The analyzed result revealed the soil surrounding the dumping site was slightly acidic which is not harmful for agricultural production. The highest value of OC was recorded 2.14% at point 3 and the lowest value was 1.92% which was found in point 2 that is greater than the reference value. Except total N concentration, the amount of available P, K, and S were greater than their recommended level. In addition the result showed that the concentration of Cu and Pb were much higher than their recommended level and the maximum value of Cu was 0.09 ppm and 0.762 ppm was the maximum concentration of Pb. and the concentration of Zn and Cd were within tolerable limit. Zn at point 3 showed higher concentration which was 3.05 ppm. The maximum value of Cd was 0.09 ppm that was found at station 1 under point 3.J. Environ. Sci. & Natural Resources, 8(1): 65-68 2015

scholarly journals Analysis of Nutrient Security Prospects in Rural Tamil Nadu: Nutrient Availability, Nutrient Consumption Status and Way to Attain Nutrient Security

2021 ◽  
Vol 9 (3) ◽  
pp. 10-22
Author(s):  
S. Appasmandri ◽  
Keyword(s):  
Nutrient Availability ◽  
Rural Areas ◽  
Distribution System ◽  
Tamil Nadu ◽  
Nutrient Status ◽  
Consumption Pattern ◽  
Public Distribution System ◽  
Nutrient Consumption ◽  
Tamil Nadu State ◽  
Availability Assessment

Among the basic needs of life, food possesses ahead of everyone else as it nourishes us and able to stand which leads further activity. Tamil Nadu state is self-sufficient in food production and Nutrient availability assessment also shows the same but the consumption pattern shows inverse pattern to availability because consumption is directly related with income, education, taste and preference, cultural, ethical and etc. Food consumption patterns of rural Tamil Nadu shows that high demand of Public Distribution System (PDS) observed in earlier and gradually decreased over year. Vitamin Thiamine is coming under severe inequality category in rural areas of Tamil Nadu for both 61st and 68 rounds. Goal programming was effectively optimised the nutrient requirement with least cost and optimised to higher level of nutrient status.

scholarly journals EXTRACTION, ISOLATION OF ACTIVE PRINCIPLES, ANTI-BACTERIAL AND WOUND HEALING ACTIVITY OF THE MARINE ALGAL SPECIES OEDOGONIUM GLOBOSUM AND OEDOGONIUM INTERMEDIUM

2021 ◽  
pp. 72-77
Author(s):  
KARPAKAVALLI MEENAKSHISUNDARAM ◽  
PRAKASH GOVINDARAJ ◽  
SIVASUBRAMANIAM P. ◽  
RANJITHKUMAR DHANARAJ ◽  
MOHAN SELLAPPAN
Keyword(s):  
Wound Healing ◽  
Research Work ◽  
Algal Species ◽  
Raw Material ◽  
Spectral Studies ◽  
Pharmacological Activities ◽  
Methanolic Extracts ◽  
Wide Range ◽  
Marine Algal ◽  
Wound Healing Activity

Objective: Algae is the undisputed treasures of the sea and are a valuable raw material, providing unlimited opportunities for new drug discoveries. Marine algal products are in demand in the international market in the form of standardized algal extracts or semi-finished products. Methods: Aqueous and methanolic extracts of Oedogonium globosum and Oedogonium intermedium species were obtained maceration and hot percolation. The active principles from O. intermedium were isolated, purified by column chromatography, and characterized by spectral studies IR, λmax, 1HNMR and MS. The extracts of Oedogonium species were screened for their anti-microbial effects, acute dermal irritation and wound-healing activity studies. Results: Comparing to Oedogonium intermedium (45 %, 90 %, 87 %), very low extractive yields were obtained for Oedogonium globosum (10.80 %, 37 %, 28 %). At phytochemical screening, Terpenoids, Flavanoids and, Glycans were found to be present in a significant amount and upon their isolation, it was found that a collection of fractions from cold extract with Rf value in the range 0.32-0.34 as Glycans and those from the hot extract with 0.40-0.72 as Flavanoids and those from methanolic extracts with 0.23, 0.44 and 0.71 as for Terpenoids. Anti-bacterial study revealed out the fact of Oedogonium species could give higher inhibition to gram-positive than for gram-negative bacteria at (10 μg/10μl/disc) concentration. No symptoms of systemic toxicity and mortality were observed. Silver sulfadiazine, more potent in wound closure, the effect of methanolic extracts of O. intermedium (87 %) was almost at par to the standard (95 %) in action and significantly greater than O. globosum (72 %, P<0.05). Conclusion: Admittedly, Oedogonium type algal species can be known as medicinal algae with a plethora of a wide range of pharmacological activities. Thus, this research work may be considered further for extensive innovative discoveries of new lead molecules and any other pharmacological activities, in the future.

scholarly journals Assessment of Available Micronutrients Status in the Soils of Melur Block, Madurai District, Tamil Nadu, Using GIS and GPS Techniques

2021 ◽  
pp. 108-116
Author(s):  
P. Ramamoorthy ◽  
P. Christy Nirmala Mary ◽  
P. Saravanapandian ◽  
A. Gurusamy ◽  
K. Kumutha
Keyword(s):  
Tamil Nadu ◽  
Nutrient Status ◽  
Micronutrient Deficiency ◽  
Soil Samples ◽  
Zn Deficiency ◽  
Soil Resource ◽  
And Zn Deficiency ◽  
Standard Procedures ◽  
Resource Inventory ◽  
Critical Limits

A soil resource inventory was conducted at village level in the Melur block of Madurai district, Tamil Nadu to assess the micronutrients status in the soils and to prepare fertility maps depicting the extent of soil micronutrient deficiency/sufficiency using GIS and GPS techniques. Soil samples were collected at revenue village wise along with geo coordinates and analysed for available micronutrients such as Zn, Fe, Cu and Mn by adopting standard procedures. Based on the nutrient status, the soils were grouped as deficient or sufficient using the critical limits. Per cent deficiency of micronutrients in Melur block was worked out and the thematic maps showing status of different available micronutrients were generated. The results indicated that, Fe and Zn  deficiency is most prevalent in the soils of Melur block  in Madurai district to an extent of more than 35 per cent, followed by Cu (1.1%) and Mn (10%).

scholarly journals A cross-sectional study on morbidity status among school going adolescents in Thiruvallur district, Tamil Nadu

2019 ◽  
Vol 6 (12) ◽  
pp. 5201
Author(s):  
Sathish Dev D. ◽  
Sugantha Valli M. ◽  
Gnana Sezhian M. ◽  
Suganya E.
Keyword(s):  
Tamil Nadu ◽  
Gastrointestinal Disease ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Health Problems ◽  
Age Group ◽  
Sectional Study ◽  
Cross Sectional ◽  
Wide Range ◽  
Tract Infections

Background: Adolescents represent about 21.8 percent of India’s population. Various health risks with potentially life-threatening consequences become prominent in this age group. This study was undertaken with the objective to determine the morbidity profile of school going adolescents in Tamil Nadu.Methods: This descriptive, cross sectional study was planned and conducted from January 2016 to August 2017. The study population included 987 adolescent boys and girls aged between 10 to 19 years studying in high and higher secondary Government schools of Thiruvallur district of Tamil Nadu. Semi-structured questionnaire was used as data collection tool.Results: The mean age groups of this school going adolescent are 14.2 yrs. In the present study 583 (59%) of the study participants were affected by one or more morbidity condition. Among them, 395 (67.7%) were in the age group 10-14 years and 188 (32.2%) in the age group 15-19 years. 122 (21%) and 461 (79.1%) of male and female were affected respectively. In the present study, fever (21%) was the commonest reported morbidity followed by acute respiratory infection (15.7%) and acute gastrointestinal disease (13. 4%).Conclusions: This study shows that adolescents are prone to a wide range of morbidity conditions. Apart from respiratory and gastro intestinal diseases, reproductive tract infections and sexual health problems are important morbidities affecting this age group. There is strong need to sensitize health care practitioners at all levels, in both government and private sectors towards health problems in adolescent age groups.

scholarly journals The Importance of Size Ranges in Aerosol Instrument Intercomparisons: A Case Study for the ATom Mission

2020 ◽  
Author(s):  
Hongyu Guo ◽  
Pedro Campuzano-Jost ◽  
Benjamin A. Nault ◽  
Douglas A. Day ◽  
Jason C. Schroder ◽  
...  
Keyword(s):  
Critical Evaluation ◽  
Organic Nitrate ◽  
Related Factors ◽  
Precision Error ◽  
Aerosol Mass Spectrometer ◽  
Air Masses ◽  
Aerosol Mass ◽  
Chemical Measurements ◽  
Wide Range ◽  
Different Seasons

Abstract. Aerosol intercomparisons are inherently complex, as they convolve instrument-dependent detection efficiencies vs. size (which often change with pressure, temperature, or humidity) and variations on the sampled aerosol population, in addition to differences in chemical detection principles (e.g., including inorganic-only nitrate vs. inorganic plus organic nitrate for two instruments). The NASA Atmospheric Tomography Mission (ATom) spanned four separate aircraft deployments, which sampled the remote marine troposphere from 86° S to 82° N over different seasons with a wide range of aerosol concentrations and compositions. Aerosols were quantified with a set of carefully characterized and calibrated instruments, some based on particle sizing and some on composition measurements. This study aims to provide a critical evaluation of the size-related factors impacting aerosol intercomparisons, and of aerosol quantification during ATom, with a focus on the Aerosol Mass Spectrometer (AMS). The volume determined from physical sizing instruments is compared in detail with that derived from the chemical measurements of the AMS and the Single Particle Soot Photometer (SP2). Special attention was paid to characterize the upper end of the AMS size-dependent transmission with in-field calibrations, which we show to be critical for accurate comparisons across instruments with inevitably different size cuts. Observed differences between campaigns emphasize the importance of characterizing AMS transmission for each instrument and field study for meaningful interpretation of instrument comparisons. Good agreement was found between the composition-based volume (including AMS-quantified sea salt) and that derived from the size spectrometers. The very clean conditions during most of ATom resulted in substantial statistical noise (i.e., precision error), which we show to be substantially reduced by averaging at several-minute time intervals. The AMS captured, on average, 95 ± 15 % of the standard PM1 volume. These results support the absence of significant unknown biases and the appropriateness of the accuracy estimates for AMS total mass/volume for the mostly aged air masses encountered in ATom. The particle size ranges that contribute chemical composition information to the AMS and complementary composition instruments are investigated, to inform their use in future studies.

Colletotrichum capsici. [Distribution map].

2002 ◽  
Author(s):  
Keyword(s):  
Tamil Nadu ◽  
New Caledonia ◽  
Solomon Islands ◽  
French Polynesia ◽  
American Samoa ◽  
Peninsular Malaysia ◽  
Distribution Map ◽  
Colletotrichum Capsici ◽  
Brunei Darussalam ◽  
Wide Range

Abstract A new distribution map is provided for Colletotrichum capsici (Syd.) E.J. Butler & Bisby Fungi: Ascomycotina: Glomerellaceae Hosts: especially Solanaceae but also occurring on a wide range of other broad-leaved plants. Information is given on the geographical distribution in ASIA, Bangladesh, Brunei Darussalam, China, Guangdong, Shandong, India, Andhra Pradesh, Assam, Bihar, Gujarat, Haryana, Himachal Pradesh, Karnataka, Kerala, Madhya, Pradesh Maharashtra, Meghalaya, Orissa, Punjab, Rajasthan, Tamil Nadu, Uttar Pradesh, West Bengal, Indonesia, Java, Malaysia, Peninsular Malaysia, Sabah, Sarawak, Myanmar, Pakistan, Singapore, Sri Lanka, Thailand, AFRICA, Burkina Faso, Cote d'Ivoire, Malawi, Nigeria, Seychelles, Zimbabwe, NORTH AMERICA, USA, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Texas, CENTRAL AMERICA & CARIBBEAN, Antigua and Barbuda, Barbados, Cuba, St Vincent and Grenadines, Trinidad and Tobago, OCEANIA, American, Samoa, Australia, Western Australia Fed., States of Micronesia, Fiji, French, Polynesia, Guam, New Caledonia, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Vanuatu, Wallis and Futuna Islands.

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