scholarly journals Satellite Derived Aerosol Optical Depth Climatology over Tropical Coastal Station Machilipatnam, India

Author(s):  
A.S. Madhusudanacharyulu ◽  
K. Samatha ◽  
K. Sailesh Kumar ◽  
K. Jagadeesh ◽  
Suneetha Rani

Climatological aerosol optical depths (AOD) over Tropical coastal city Machilipatnam, India have been examined to bring out the temporal heterogeneity in columnar aerosol characteristics. AOD values at 388 nm derived from the Ozone Monitoring Instrument (OMI) sensor EOS-AURA satellite, for the period of 2005–2013 have been analyzed for the purpose. AOD trends exhibited seasonal annual mean variations. Frequency distributions of the AOD values are examined to infer the monthly mean values. Monthly and seasonal variations of AOD are investigated in the light of regional synoptic meteorology. AODs>0.6 showed maximum occurrence in monsoon months. The mean AOD values increased towards summer reaching ~0.69 ± 0.34 and attained peak in monsoon season with a value of ~0.74 ± 0.33 and decreased during post-monsoon reaching as low as ~0.73 ± 0.3. Positive slope ~0.016 observed for inter annual distribution trend line. Factors like synoptic scale circulation patterns which are causing modulations of AOD apart from local sources were discussed.

1988 ◽  
Vol 22 (2) ◽  
pp. 117-121 ◽  
Author(s):  
M. E. Robinson ◽  
A. M. Verrinder Gibbins ◽  
M. H. Hardy

Vitamin A levels in tissues of 20 normal adult hamsters on a standard diet were measured colorimetrically. No significant difference between male and female animals was found for any of the tissues sampled. The mean vitamin A value for blood plasma in 20 animals was 53·4 μg/dl. Mean values for liver, kidneys, flank skin and cheek pouch were 813, 1·29, 1·84 and 1·31 mg/g wet weight, respectively. The vitamin assay was less suitable for small organs such as trachea.


EDUSAINS ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 249-254
Author(s):  
Hariyanto Hariyanto ◽  
S Yamtinah ◽  
Sukarmin Sukarmin ◽  
Sulistyo Saputro ◽  
L Mahardiani

ANALISIS KETERAMPILAN KOMUNIKASI TERTULIS SISWA DALAM PEMBELAJARAN ILMU PENGETAHUAN ALAM (IPA) BERDASARKAN GENDER DI SEKOLAH MENENGAH DI WILAYAH TANGERANG SELATAN AbstrakKeterampilan komunikasi tulisan merupakan keterampilan yang sangat penting didalam era globalisasi dan termasuk kedalam salah satu keterampilan belajar abad 21 yang harus diberdayakan dalam pembelajaran. Penelitian ini bertujuan untuk komunikasi tulisan peserta didik secara real di sekolah berdasarkan gender. Subjek dalam penelitian ini berjumlah 186 orang dengan rincian 88 orang laki-laki dan 98 orang perempuan. Metode yang digunakan dalam penelitian ini adalah metode penelitian deskriptif kuatitatif. Instrumen penelitian yang digunakan berupa lembar observasi dan pedoman wawancara. Data yang didapatkan kemudian dianalisis secara kuantitatif sehingga didapatkan nilai keterampilan komunikasi peserta didik. Hasil penelitian mengungkapkan tidak terdapat perbedaan yang terlalu besar antara nilai keterampilan komunikasi tulisan peserta didik laki-laki dan perempuan. Masing-masing gender(laki-laki dan perempuan) mendapatkan rata-rata nilai 1,44 dan 1,45, namun keduanya masih masuk kedalam kategori nilai huruf D+. Nilai keterampilan komunikasi tulisan peserta didik masih relative rendah dengan nilai rata-rata 1,44 (D+). Hasil ini masih jauh dibawah standar pemerintah dalam Permendikbud No. 104 tahun 2014 yaitu 2,67 (B-) untuk aspek keterampilan. Hal tersebut mengindikasikan perlu ditingkatkannya pelatihan keterampilan komunikasi didalam pembelajaran.AbstractWritten communication skills are essential for the globalization era, and it is one of the 21st-century skills that must be empowered in learning. This study aimed to determine the profile of learners’ written communication skills in real terms by gender. The subjects in this study were 186 students, consisted of 88 male and 98 female students in detail. The method used in this research was a descriptive-quantitative research method. The research instrument used was an observation sheet and the form of an interview. The data obtained were then analyzed quantitatively so that the value of the students’ communication skills was appropriately obtained. The results of the study had found that there were not too differences in the mean values of male and female written communication skills. Each of them got an average score of 1.44 and 1.45, but both are still in the D+ category of value. The value of the students’ written communication skills was still relatively low, with a value of 1.44, interpreted as a D+ category. The results were far below government standards as regulated in the Minister of Education and Culture No. 104 of 2014, which is equal to 2.67 (B-). Further study is needed to improve training in students’ written communication skills in learning. 


1998 ◽  
Vol 131 (3) ◽  
pp. 341-346 ◽  
Author(s):  
A. K. SHINDE ◽  
S. A. KARIM ◽  
S. K. SANKHYAN ◽  
R. BHATTA

A study on the energy expenditure of sheep was carried out at the Central Sheep and Wool Research Institute, India during August 1995 to July 1996 by conducting two experiments: one on tracheal cannulated rams maintained on stall-feeding in autumn 1995 (Expt 1) followed by year-round grazing on silvipasture (Cenchrus ciliaris pasture interspersed with fodder trees) over three seasons: monsoon, winter and summer, 1995/96 (Expt 2). Physiological responses and energy expenditure measurement of housed and grazing sheep were recorded at 06.00, 14.00 and 22.00 h for 5 consecutive days in each season. Tracheostomized sheep harness with meteorological balloon were used for collection of expired air and measurement of energy expenditure. Rectal temperature (RT) of sheep at 06.00 h was similar in all the seasons except for a significant (P<0·05) lower value in monsoon. The rise of RT from 06.00 to 14.00 h in grazing animals was 1·6 °C, higher than that in housed sheep (0·9 °C). Skin temperature (ST) was least in winter and highest at 14.00 h in the monsoon and autumn seasons. Respiration rate (RR) showed a marked rise at 14.00 h in all the seasons. The heart rate (HR) of grazing sheep was higher, irrespective of season, at 14.00 h. At 06.00 and 22.00 h, the heart rate was higher in winter and summer than in the monsoon season. Overall energy expenditure (EE) was 4·85 MJ/24 h during winter which increased to 5·85 MJ/24 h in summer and 6·70 MJ/24 h in the monsoon. The mean rise in energy expenditure per °C rectal temperature in all the seasons was 338 kJ/kg W0·75. Comparable mean values per 10 °C ambient temperature and 10 °C black globe temperature were 404 and 173. The increase in energy expenditure of grazing compared to housed sheep in monsoon, winter and summer was 78, 15 and 33 % respectively. The mean value was +43%.


2014 ◽  
Vol 62 (1) ◽  
pp. 7-12
Author(s):  
Lorena Nielsen DAMASCENO ◽  
Roberta Tarkany BASTING

OBJECTIVE: The aim of this study was to analyze the facial features of patients with Down syndrome, such as projection of the nose, projection and length of upper and lower lips, projection of soft pogonion and to compare them with the standardized analysis by Ayala and Gutierrez1. METHODS: The sample consisted of 20 patients with Down's Syndrome, between 8 and 13 years-old of both genders. The analysis was performed by one orthodontist, using lateral cephalograms and photography in natural head position. For statistical analysis, the mean values of linear measurements within a range of 95% were used. RESULTS: The mean (± standard deviation) showed a nasal projection of 10.1 mm (2.4), the upper and lower lip in front of the vertical reference line, subnasal and soft pogonion with a retrusion of 4.95 mm (4.6). The length of the upper lip showed a value of 20.2 mm (2.4) and the length of the lower lip of 42.5 mm (2.9). CONCLUSION: The facial analysis of patients with Down's Syndrome, compared with Ayala and Gutierrez1, showed smaller nasal projection, greater projection of the upper and lower lip, but lengths, and retrusion of the soft pogonion, similar to those of normal individuals


2019 ◽  
Vol 15 (1) ◽  
pp. 85-99
Author(s):  
Saman Shishehchi ◽  
Seyed Yashar Banihashem

Despite the high number of people with disabilities, there are only a few job recommender systems that cater to their needs. This study analyses the implementation of an ontology based recommender system (JRDP) that offers suitable jobs to the disabled. The system considers whether or not an assistive technology exists to address certain disabilities in a specific application domain. If so, a list of available jobs from the application domain would be recommended to the disabled workforces. Two modules are considered as main components of the framework; knowledge-based and recommendation modules. 10 applicant with various disabilities participated in the testing session. The T-test evaluation demonstrates that JRDP requires less time for the recommendation process compared to ontology-less recommendation systems. The mean values for each construct of questionnaire can be calculated using the usability test, with the average mean reported to be 4.55. Cronbach's Alpha was used for testing the reliability of questionnaire, reporting a value of (0.759), which confirms its reliability.


MAUSAM ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 57-66
Author(s):  
D. A. MOOLEY

Based on the data for the period 1939-1954, the mean values of rainfall and number of rainy days during the, monsoon season at the various raingauge stations as well as the extreme values of these have been given; spatial distribution of heavy, rainfall over the State and the incidence of heavy rainfall at the various location have been studied. From a study of the synoptic charts on days prior to the days on which local heavy rainfall over was reported, an attempt has been made to indicate the topical synoptic situations which usually lead to local heavy rainfall over Delhi State during the next 24hours.Typical situation ‘have been illustrated by charts.  


2013 ◽  
Vol 5 (2) ◽  
pp. 53-57
Author(s):  
MMM Hoque ◽  
S Roy ◽  
MN Hoque ◽  
MZ Islam

The study was carried out to assess some physico-chemical water quality parameters and pollution scenario of the Bansi river. Water samples were collected from 8 different selected stations at Bagholpur to Nayarhat portion of Bansi river during winter and monsoon periods. The values of all parameters except temperature and DO were found higher in winter season compared to that of monsoon season. The water was slightly alkaline to strongly alkaline ranging from average pH value of 7.6 in monsoon to 8.5 in winter. The DO was found unsuitable for fisheries and irrigation purposes. The BOD was found extremely higher in winter than that of standard level set by the Government of Bangladesh. The mean values of EC in monsoon was 452.4 ?s/cm, whereas in winter season it was 901 ?S/cm, the value of DO in monsoon season was 4.7 mg/l whereas in winter it was 3.2 mg/l, the value of BOD in monsoon season was 8.9 mg/l and in winter season it was 31.4 mg/l, the value of TDS in monsoon season was 306.3 mg/l and in winter season it was 496 mg/l, the value of alkalinity in monsoon season 50.4 mg/l and in winter season it was 146.5 mg/l.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14601 J. Environ. Sci. & Natural Resources, 5(2): 53-57 2012


2011 ◽  
Vol 24 (1) ◽  
pp. 77-87 ◽  
Author(s):  
Yuri A. Romanov ◽  
Nina A. Romanova ◽  
Peter Romanov

AbstractWe have examined information on the shape and size of Antarctic icebergs as derived from the ship data archive of Arctic and Antarctic Research Institute. The data in the archive cover the period from 1957–2009. For each of five major iceberg shapes we have established their relative frequency of occurrence in the Southern Ocean and the frequency distribution of the iceberg length and freeboard. Weathered and tabular icebergs were observed most often and comprised 66.9% and 22.6% of all reported icebergs respectively. Sloping, pinnacle, and dome icebergs represented correspondingly only 5.6%, 3.2% and 1.7% of the total number of icebergs observed. A distinct maximum was found in frequency distributions of the iceberg length and freeboard for all iceberg shapes. The most frequently observed iceberg lengths (modal length) ranged from 100–200 m for weathered and pinnacled icebergs to 400–600 m for tabular and dome-shaped iceberg. The modal freeboard of icebergs changed from 30–40 m for tabular and weathered icebergs to 50–60 m for domed, pinnacle and sloping icebergs. To calculate the overall mean size parameters of Antarctic icebergs we totalled corresponding mean values for each iceberg shape weighted by the frequency of occurrence of icebergs of each shape. The mean iceberg length and the standard deviation obtained within this approach were correspondingly 381 m and 349 m. The mean iceberg freeboard was equal to 41.2 m with a standard deviation of 12.1 m.


Author(s):  
Yasuhiro Kudoh ◽  
Yoshio Takéuchi

AbstractUsing a miniature diamond-anvil pressure cell and by means of single-crystal four-circle diffractometry, the crystal structure of synthetic forsterite has been studied up to 149 kb. The results are: (1) the distortion of the oxygen lattice from that of an ideal hexagonal closest packing (hcp) decreases with an increase of pressure, the extrapolation of the variation mode showing that the oxygen lattice would be ideally of the hcp type at around 160 kb. (2) While the mean Mg(2) – O bond shows a linear decrease with an increase of pressure, the mean Mg(1) – O distance ceases decreasing at around 80 kb. The value at this pressure is kept constant up to the experimental limit of 149 kb. At this extreme pressure both mean values are 2.05 Å. (3) The bulk modulus for the mean Si – O bond shows a value of 1.9 Mb.


2012 ◽  
Vol 51 (8) ◽  
pp. 1489-1507 ◽  
Author(s):  
A. Bracci ◽  
P. Cristofanelli ◽  
M. Sprenger ◽  
U. Bonafè ◽  
F. Calzolari ◽  
...  

AbstractThis work analyzes and classifies stratospheric airmass transport events (ST) detected at the Nepal Climate Observatory–Pyramid (NCO-P; 27°57′N, 86°48′E, 5079 m MSL) Global Atmospheric Watch–World Meteorological Organization station from March 2006 to February 2008. For this purpose, in situ ozone (O3), meteorological parameters (atmospheric pressure and relative humidity), and black carbon (BC) are analyzed. The paper describes the synoptic-scale meteorological scenarios that are able to favor the development of ST over the southern Himalaya, by analyzing the meteorological fields provided by the ECMWF model (geopotential height, wind speed, and potential vorticity), satellite Ozone Monitoring Instrument data (total column ozone), and three-dimensional back trajectories calculated with the Lagrangian Analysis Tool (LAGRANTO) model. The study, which represents the first “continuous” classification of ST in the southern Himalaya, permitted classification of 94% of ST days within four synoptic-scale scenarios: stratospheric potential vorticity structures (PVS), subtropical jet stream (SJS), quasi-stationary ridges (QSR), and monsoon depressions (MD). SJS and PVS were the most frequent scenarios (48% and 30% of occurrences, respectively), QSR occurred for 12% of the ST days, and MD were detected only during the monsoon season (3%). SJS and PVS scenarios presented a peak frequency during the nonmonsoon seasons, when the jet stream and westerly disturbances influence atmospheric circulation over the southern Himalaya. During the identified ST, significant variations of O3 (+24%) and BC (−56%) were recorded relative to the averaged 2-yr mean values. On average, PVS and SJS were the most effective synoptic-scale scenarios in modifying the O3 and BC levels at NCO-P from postmonsoon to premonsoon seasons, and ST is one of the leading processes in defining the “background” BC variability at NCO-P.


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