scholarly journals A study on the medicinal value and distribution of climbers of Nattika, India

2014 ◽  
Vol 1 (1) ◽  
pp. 36-39
Author(s):  
ES Abhilash ◽  
Sheeja P Parayil ◽  
AR Raju ◽  
Brijesh Sathian ◽  
Vinil Udayan
Keyword(s):  
Sustainable Development ◽  
Medicinal Plants ◽  
Rare Species ◽  
Sustainable Use ◽  
High Density ◽  
Low Density ◽  
Medium Density ◽  
Medicinal Value

Seventeen climber species were collected from Nattika which is highly medicinal in nature. Five Climber species represented with high density, five with medium density and seven with low density respectively. The wild areas of the Nattika harbor some of the rare species that are not seen in adjacent lands. This study throws light to the importance of conservation of wild areas and also suggests that peoples will be benefited by sustainable use of medicinal plants. DOI: http://dx.doi.org/10.3126/apjeesd.v1i1.9510Asia Pacific Journal of Environment Ecology and Sustainable Development 2013; 1: 36-39

Spatial analysis of the factors influencing housing quality for renters in a traditional Nigerian city

2019 ◽  
Vol 12 (2) ◽  
pp. 181-209
Author(s):  
Falilat Yetunde Olowu ◽  
Emmanuel Babatunde Jaiyeoba ◽  
Hafeez Idowu Agbabiaka ◽  
Olawunmi Johnson Daramola
Keyword(s):  
Rental Housing ◽  
High Density ◽  
Housing Quality ◽  
Systematic Sampling ◽  
Low Density ◽  
Medium Density ◽  
Residential Areas ◽  
Content Type ◽  
Factors Influencing ◽  
Housing Characteristics

Purpose Rental housing is an important form of accommodation; evaluating its quality will improve the quality of designs, standard living of renters, new dimension to policy guiding rental housing and enhance the values of rental houses. This study aims to examine the factors influencing rental housing quality in Ile-Ife, Nigeria. Design/methodology/approach Multi-stage sampling procedure was used to select tenants for the study. Residential areas were stratified into three densities: high, medium and low. Out of the 18 residential areas identified, six, eight and four were in the high, medium and low densities, respectively. Five residential areas were selected based on high concentrations of rental housing. The selected areas are Mokuro and Iloro (high density), Ife City and Eleyele (medium density) and Aladanla (low density). Systematic sampling technique was used to select 550 buildings where an adult tenant was selected per building for questionnaire administration. Findings The results of the principal component analysis established that four factors were generated for the high-density, nine factors for the medium-density and five factors for low-density areas as the major factors influencing rental housing quality. The variation in the number of factors generated and the percentage variance explained by the factors could be associated to the peculiarities across the densities in terms of the socioeconomic characteristics and housing characteristics of the renters. Originality/value This study examined the factors influencing housing quality for renters in Ile-Ife, Nigeria. It provides information on the three residential densities in terms of the variation in their housing morphology. The study went further to establish the relationship among the three musketeers such as socioeconomic characteristic of renters, housing characteristics and housing quality, under three dimensions environmental, internal building and external Building. Therefore, the contribution of this study strengthens the position that a minimum standard and schedule of upgrade and maintenance should be meted out for landlords to carry out repairs at interval, so as to make the housing unit and environment habitable for tenants.

scholarly journals Reduction of River Pollutants with Raffia-Cord in Sail River Pekanbaru Indonesia

2021 ◽  
Vol 934 (1) ◽  
pp. 012063
Author(s):  
Budijono ◽  
R D Sibagariang ◽  
M Hasbi
Keyword(s):  
High Density ◽  
Low Density ◽  
Medium Density ◽  
Cod Reduction ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Reduction Effectiveness

Abstract The Sail River has been polluted by various types of pollutants in Pekanbaru. Raffia-cord is shaped like a feather duster, made of raffia rope that has been smoothed and then woven like a feather duster. This research was conducted as an effort to reduce the river pollutants (nitrate, phosphate, ammonia, Pb, Cr, COD, and BOD5. The study was carried out in Sail River in March – April 2019 using the Completely Randomized Design (CRD) method with density variations: low density (P1), medium density (P2), and high density (P3). The average results showed that the decrease for nitrate was 0.075-0.117 mg/L (35-44%) from 0.136-0.347 mg/L; phosphate 0.205-0.267 mg/L (29-40%) from 0.339-0.381 mg/L; ammonia 0.027-0.076 mg/L (28-58%) from 0.093-0.108 mg/L. The decreasing effectiveness of P1, P2, and P3 for Pb were 67.146%, 70.465% and 67.242%; for Cr were 81.346%, 83.335% and 81.893%. The average COD reduction effectiveness were 38.7%; 46.9%; 42.5% while BOD5 were 71.4%, 74.1% and 69.5%. It was concluded that raffia-cord could be used to reducing nitrate, phosphate, and ammonia levels, raffia-cord was able to reduce the concentration of Pb and Cr but raffia-cord had no significant effect on decreasing COD and BOD5.

NUTRIENT PRESERVATION AND ACCEPTABILITY OF FORAGES ENSILED WITH SODIUM METABISULPHITE AT VARYING LEVELS OF COMPACTION AND DRY MATTER

1961 ◽  
Vol 41 (4) ◽  
pp. 720-727 ◽  
Author(s):  
W. E. Cordukes ◽  
D. A. Shearer
Keyword(s):  
Dry Matter ◽  
High Density ◽  
Low Density ◽  
Medium Density ◽  
Sodium Metabisulphite

Sodium metabisulphite treatments did not reduce ensiling losses in mixed forages of various dry matter percentages at different densities.The quality and odour of low-density, low-dry matter silages were improved, but those of high-density silages were unaffected.Bisulphite increased the acceptability to heifers of forages of low to medium dry matter ensiled at medium density. Bisulphite did not increase the acceptability of low-dry matter forages ensiled at low density.

scholarly journals PRODUKSI DAN LAJU DEKOMPOSISI SERASAH MANGROVE BERDASARKAN TINGKAT KERAPATANNYA DI DELTA SUNGAI WULAN, DEMAK, JAWA TENGAH

2016 ◽  
Vol 5 (4) ◽  
pp. 311-319
Author(s):  
Sena Widhitama ◽  
Pujiono Wahyu Purnomo ◽  
Agung Suryanto
Keyword(s):  
Food Chain ◽  
Decomposition Rate ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
High Density ◽  
Survey Method ◽  
Low Density ◽  
Medium Density ◽  
Point Sampling ◽  
Rhizophora Apiculata

ABSTRAK Salah satu proses pada ekosistem mangrove yang memberikan kontribusi  besar terhadap kesuburan perairan adalah proses dekomposisi atau penghancuran serasah mangrove. Penghancuran serasah merupakan bagian dari tahap proses dekomposisi, yang dapat menghasilkan nutrient  penting dalam rantai makanan, melalui produktivitas perairan disekitarnya, sebagaimana yang terjadi di Delta Sungai Wulan. Tujuan penelitian ini adalah untuk mengetahui produksi serasah mangrove dan laju dekomposisinya berdasarkan tingkat kerapatan mangrove.Metode yang digunakan adalah metode survai hal ini dilakukan dalam tiga titik sampling, yang dikelompokkan pada tiga kategori kerapatan mangrove yaitu rendah, sedang dan tinggi.Penelitian ini dilaksanakan pada bulan januari sampai maret 2016. Hasil penelitian  menemukan  tiga spesies mangrove yaitu Rhizopora mocrunata, Rhizopora apiculata, dan Avicennia marina. Jumlah serasah yang diperoleh pada kerapatan mangrove rendah adalah 701.51 gram, mangrove kerapatan sedang berjumlah 837.94 gram dan mangrove kerapatan tinggi berjumlah 1276.85 gram. Laju dekomposisi dalam 30 hari pengamatan dengan laju tertinggi berada pada mangrove kerapatan tinggi dengan persentase 29 – 30 %, sedangkan kerapatan mangrove rendah dan kerapatan mangrove sedang dengan persentase 28%. Kata kunci : Delta Sungai Wulan;Produksi Serasah;Laju Dekomposisi ABSTRACTOne of the processes at mangrove ecosystem which contributes greatly to the fertility waters is the process of decomposition or destruction of mangrove manure. Destruction of Manure is a part of the decomposition process, can produce an important nutrient in the food chain, by means of  productivity of the surroundings waters, as happened in Delta Wulan. The purpose of this study was to find out the mangrove manure production and the rate of decomposition is based on the density of mangrove. The method used is a survey method  to divide the three point sampling, which grouped in three categories mangrove density, low, medium and high. This research was conducted in January to March 2016. The result of research to found  three species of mangrove that Rhizopora mocrunata, Rhizophora apiculata and Avicennia marina. The amount of manure that is obtained at a low density is 701.51 grams, medium density amounted to 837.94 grams and high density mangrove amounted to 1276.85 grams. The rate of decomposition in the 30 days of observation by the highest rates are in the high density mangrove with a percentage of 29% - 30%, meanwhile low density mangrove and mangrove medium density with a percentage of 28%. Keywords : Delta Wulan River;Manure production;Decomposition rate

scholarly journals KARBON TERSIMPAN PADA BERBAGAI TIPE KERAPATAN TEGAKAN DI HUTAN RAKYAT DESA SUKOHARJO I KECAMATAN SUKOHARJO KABUPATEN PRINGSEWU

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Dio Ivando ◽  
Irwan Sukri Banuwa ◽  
Afif Bintoro
Keyword(s):  
Data Collection ◽  
Carbon Stock ◽  
High Density ◽  
Carbon Uptake ◽  
Co2 Uptake ◽  
Co2 Absorption ◽  
Low Density ◽  
Medium Density ◽  
Private Forest ◽  
Tree Biomass

Forests had an important role in carbon reserve and uptake: where this was one of efforts of global warming’s impacts mitigation. The aim of this research was to know the effect of  density in potential of  carbon reserve and uptake in the private  forest.  Data collection was carried out by survey;  then the collected data were analyzed for tree biomass, necromass, litter and ground plants, total of carbon stock in one area, suitability of carbon stock, CO2 absorbtion, and the differences in carbon stock and carbon uptake in each of density class. The result showed that, forests with low density were significantly lower in stored carbon and CO2 absorption, respectively 54.57 tons/ha and 200.27 tons/ha. In medium and high density forests, both the amount of stored carbon and CO2 uptake were no different. At medium density, stored carbon was 79.78 tons/ha, and CO2 absorption was 292.79 tons/ha. In high density, stored carbon was 92.94 tons/ha and CO2 absorption was 341.09 tons/ha.

Discrimination of simulated texture patterns on the human hand

1996 ◽  
Vol 76 (2) ◽  
pp. 1145-1165 ◽  
Author(s):  
C. E. Kops ◽  
E. P. Gardner
Keyword(s):  
Human Subjects ◽  
Receptive Fields ◽  
Spatial Arrangement ◽  
High Density ◽  
Human Hand ◽  
Low Density ◽  
Medium Density ◽  
Spatial Cues ◽  
Dot Density ◽  
Similar Density

1. Textures formed by periodic dot arrays are defined by the dot density, spacing, and angular orientation with respect to the direction of motion. In this report we evaluate the effects of the dot density (intensive cues) and arrangement (spatial cues) on the ability of human subjects to discriminate texture patterns scanned across an OPTACON tactile stimulator that selective stimulates rapidly adapting cutaneous mechanoreceptors. We compared dot arrays arranged on the index finger in specific patterns (horizontal, vertical, diamond, up diagonal, or down diagonal orientation) and spaced 4.8, 7.2, or 9.6 mm apart (high, medium, and low density) with the use of a two-alternative forced-choice protocol. 2. Textures are well discriminated when their elements are tightly spaced along one axis and widely spaced on all other axes. Humans distinguish textures that differ only in orientation with mean accuracy of 75% at low density and 65% at medium density, but discriminate high-density textures poorly (mean accuracy = 48%). Accuracy is related to the angular disparity between patterns, and to similarity of spacing and orientation along major and minor axes of the arrays. Vertical and horizontal patterns are more accurately distinguished than the oblique ones, and diamond arrays are the least well discriminated. Diagonal and diamond textures are often confounded, and the up and down diagonal patterns are confused with each other particularly as the texture density rises. The preference for the vertical and horizontal patterns may relate to an interaction between the orientation axis of the texture and its direction of motion across the skin. 3. Intensive cues provided by the total number of applied stimuli supplement the spatial cues inherent to the pattern orientation, because textures that differ in both spacing and orientation are discriminated better than those that differ only in orientation or spacing. Mean accuracy ranges from 96% for comparisons of high- and low-density textures, which differ in the total number of dots by a factor of 2, to 80% when medium-density patterns are compared with high- or low-density textures. 4. Textures that differ in density but not in orientation are less well discriminated than those of different orientation. For example, 82% of patterns that differ in both density and orientation are distinguished correctly in pairings of low- and medium-density textures, whereas those that differ only in density are discriminated correctly on 45% of trials. Subjects seem to use spatial rather than intensive cues when discriminating patterns of similar density, suggesting that the similarity of form (the spatial arrangement of the closely spaced dots) is more readily apparent than small differences in spacing along the axis of motion. 5. Subjects are most most successful in differentiating texture patterns when they are able to mentally picture the orientation and spacing of the pattern. We found a strong correlation between the subjects' ability to discriminate textures of a given spacing and their ability to identify the specific texture by matching it to the appropriate visual representation. Subjects are able to identify correctly all five orientations at low and medium densities, with mean accuracy of 76%, but recognize only the vertical arrays when high-density patterns are presented. The ability to image the textures is noteworthy, because subjects received no feedback about performance. 6. Spatial imaging of textures appears limited by the diameter of cutaneous receptive fields on the hand. We propose that the structural axis of a regular texture array results from perceptual linkage of adjacent elements along one principal axis by continuous bands of neural activity when their spacing is smaller than the receptive field diameter.(ABSTRACT TRUNCATED)

REDUCTION IN DAMAGE TO POTATOES BY LEPTINOTARSA DECEMLINEATA (COLEOPTERA: CHRYSOMELIDAE) BY MIXTURES OF INSECTICIDES AND SILICA

1977 ◽  
Vol 109 (1) ◽  
pp. 59-66
Author(s):  
B. C. Smith ◽  
C. G. Halliday
Keyword(s):  
Irish Cobbler ◽  
Leptinotarsa Decemlineata ◽  
Feeding Rate ◽  
High Density ◽  
Low Density ◽  
Pest Species ◽  
Medium Density ◽  
Pirimiphos Methyl ◽  
Better Than ◽  
Greenhouse Tests

AbstractThe efficacy of insecticide–silica mixtures depended on brand of silica, i.e. Ar6gen®500, Hi-Sil®233, Micro-Cel®A, and Zeolex®100; number and population density of pest species; and cultivar of potato. In greenhouse tests, changes in the proportions of carbaryl and Arogen®500 in mixtures did not change efficacy; a 600 ppm carbaryl – 5400 ppm Arogen®500 mixture was as good as 1000 ppm carbaryl; and mixtures with either phosmet or pirimiphos-methyl and any silica with 30 ppm of insecticide and 270 ppm of silica were as good as 100 ppm of insecticide using mortality, repellency, and feeding rate as criteria. In the field at high density of L. decemlineata and low aphids, a 600 ppm carbaryl – 5400 ppm Arogen-500 mixture reduced larval populations by 66% and increased yield of Irish Cobbler 18-fold; and foliage treated with a 2000 ppm phosmet – 18,000 ppm Arogen-500 mixture was less attractive to adults than foliage treated with 2000 ppm of phosmet though the mixture was not superior to phosmet in effects on yield. At medium density of L. decemlineata and low aphids, a 500 ppm pirimiphos-methyl – 4500 ppm Zeolex-100 mixture increased yield of Irish Cobbler by about 100% and of Sebago by about 200% and a 600 ppm carbaryl – 5400 ppm Arogen-500 mixture was about 32% better than 1300 ppm carbaryl in effects on yield of Sebago. At low density of L. decemlineata and high density of aphids, 1000 ppm of carbaryl and various mixtures of carbaryl and Arogen-500 increased aphids by 109%, reduced coccinellid predators by one third, and reduced yield of Irish Cobbler and Sebago by 12%.

scholarly journals SPATIAL STATISTICS FOR ESTIMATING SAGO STOCK IN WEST PAPUA, INDONESIA = Statistika Spasial untuk Estimasi Stok Sagu di Papua Barat, Indonesia

2016 ◽  
Vol 14 (2) ◽  
pp. 95
Author(s):  
Mubekti .
Keyword(s):  
Spatial Statistics ◽  
New Guinea ◽  
High Density ◽  
Low Density ◽  
Medium Density ◽  
Sago Starch ◽  
Sago Palm ◽  
Tropical Plant ◽  
West Papua ◽  
Papua Barat

Sagu sawit adalah salah satu Genus Metroxylon dari keluarga Palmae , yang mengakumulasi sejumlah besar pati di batangnya. Sebagai sumberdaya makanan bertepung, sagu bisa menjadi peran penting sehubungan dengan kemungkinan kekurangan pangan di dunia di masa depan. Sagu sawit adalah tanaman tropis yang tidak hanya tumbuh di lahan kering, tetapi juga tumbuh dengan adaptasi yang tinggi terhadap lahan basah seperti rawa air tawar, rawa gambut ataubrakish. Asal-usul sagu diyakini membentang dari Maluku dan Papua dari Indonesia ke New Guinea. Namun, perhatian untuk mengeksplorasi penyebaran dan potensi sagu belum dilakukansecara memadai di Papua. Tujuan dari penelitian ini adalah untuk mengembangkan metode statistik spasial untuk pemetaan dan memperkirakan saham sagu di Inanwatan District, Kabupaten SorongSelatan, Papua Barat. Kerangka sampling area berupa metode segmen persegi yang diterapkan untuk memperkirakan stok sagu, yang melibatkan beberapa tahapan, yaitu, (1) Stratifikasi daerahpenelitian dengan menggunakan resolusi tinggi dari data satelit, (2) Desain survei kerangka sampel, (3) Survei lapangan untuk truthing tanah, dan (4) analisis data. Hasil menunjukkan bahwa totaldaerah penelitian adalah 13.315 ha terdiri dari 2.892 ha hutan non - sagu dan 10,423 ha hutan sagu. Hutan sagu dibagi menjadi 3 strata, yaitu kepadatan rendah, kepadatan sedang, dan kepadatantinggi, yang memiliki luas wilayah 630 ha, 392 ha, dan 9.401 ha. Populasi sagu matang di kepadatan rendah , kepadatan sedang , dan kepadatan tinggi 22,680 berdiri , 32,928 berdiri , dan 549,018berdiri sebesar 4.930 ton , 7,226 ton , dan 109,044 ton pati sagu , masing-masing. Sehingga , total saham sagu di daerah penelitian adalah seluruh 121,200 ton pati sagu. Kata Kunci : statistik spasial, area kerangka sampling, penginderaan jauh, sagu sawitAbstractSago palm is one of Genus Metroxylon belonging to Family Palmae, that accumulates a huge amount of starch in its stem.As invaluable resouces of starchy food, sago palm could be an important role inrespect to possible food shortage in the world in future. Sago palm is a tropical plant which not only grows in the dry lands but also grows with high adaption to low-lying wetlands such as fresh waterswamp, peat swamp or brakish water. The origin of sago palm is believed to be the area extending from Moluccas, and Papua of Indonesia to New Guinea. However, the attention to explore spreadand potential of sago stock has not been done adequately in Papua. The Objective of this study is to develop spatial statistics method for mapping and estimating sago stock in Inanwatan District,Sorong Selatan Regency, West Papua. Area frame sampling of square segment method is applied for estimating sago stock, which involves some stages, i.e., (1) Stratification of study area by usinghigh resolution of satellite data, (2) Design of sample frame survey, (3) Field survey for ground truthing, and (4) Data analysis. The Results show that the total of study area is 13,315 ha consistedof 2,892 ha non-sago forest and 10.423 ha sago forest. Sago forest is divided into 3 strata, namely low density, medium density, and high density, which has area of 630 ha, 392 ha, and 9,401 harespectively. The population of ripe sago palm in low density, medium density, and high density are 22.680 stands, 32.928 stands, and 549.018 stands equal to 4.930 tons, 7.226 tons, and 109.044 tonsof sago starch, respectively. So that, the total sago stock in the whole study area is 121.200 tons of sago starch. Keywords: spatial statistics, area frame sampling, remote sensing, sago palm

Water-soluble carbohydrates and in vitro digestibility of annual ryegrass (Lolium rigidum Gaudin) sown at varying densities

1995 ◽  
Vol 46 (3) ◽  
pp. 611 ◽  
Author(s):  
H Smouter ◽  
RJ Simpson ◽  
GR Pearce
Keyword(s):  
Dry Matter ◽  
High Density ◽  
Water Soluble ◽  
Soluble Carbohydrates ◽  
Low Density ◽  
Medium Density ◽  
Lolium Rigidum ◽  
Plant Parts ◽  
Water Soluble Carbohydrates

An experiment is described in which the tiller density of microswards of Lolium rigidum was varied by altering planting density. The treatments were expected to alter the interplant competition for light and thus affect the concentration of water-soluble carbohydrates (WSC) of the grass swards. Swards were grown at planting densities of 100 (low density), 500 (medium density) and 5000 (high density) plants m-2. Mainly because of compensatory tillering in the low and medium density swards, all swards had equivalent dry matter yields by 13-15 days after anthesis. The concentrations of material soluble in neutral detergent (NDS) and of WSC, in particular, varied in response to the treatments, and the yield of WSC in the low density sward was 30-50% higher than in the other swards. The yield of WSC reached a maximum at anthesis in all treatments with large losses of WSC occurring as the grass senesced. Fructans were the major type of soluble carbohydrate in all plant parts (50-99% of WSC). At anthesis, the in vitro dry matter digestibility (IVDMD) of the low density sward was higher than that of the high density sward (60.7% and 54.3% respectively). When dead, whole plant IVDMD had declined to 40.8% in the low density and 37.9% in the high density sward. The higher digestibility of the low density grass sward was a result of higher digestibility in almost all component plant parts. Opportunities may exist to improve the feeding value of senescing grass pastures if mobilization of WSC can be delayed or regulated to ensure higher retention of NDS.

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