Seasonal variation in two species of unionid clams from Manitoba, Canada: biomass

1980 ◽  
Vol 58 (11) ◽  
pp. 1980-1983 ◽  
Author(s):  
Judith D. Huebner
Keyword(s):  
Seasonal Variation ◽  
Water Content ◽  
Shell Length ◽  
Seasonal Variations ◽  
Dry Weight ◽  
Ash Content ◽  
Reproductive Timing ◽  
Average Water ◽  
Anodonta Grandis ◽  
The Relationship

The relationship between dry weight and shell length for Anodonta grandis and Lampsilis radiata is log dry weight = a + 3.0317 log shell length, where a varies seasonally. Average water content of clams varies seasonally from 83.18% for both species in February and May to 85.02% for L. radiata in July and 87.56% for A. grandis in July and October. Mean ash content of L. radiata (19.21%) is higher than that of A. grandis (12.68%) except in October (20.94%) when marsupia are filled with glochidia. Differences in reproductive timing and length of glochidial retention contribute to some of the seasonal variations in biomass in A. grandis and L. radiata.

scholarly journals VARIAN IKAN NIKE (Awaous melanocephalus) DAN IKAN CAKALANG (Katsuwonus pelamis) TERHADAP MUTU KERUPUK

2018 ◽  
Vol 5 (2) ◽  
pp. 44
Author(s):  
Desi Arisanti
Keyword(s):  
Water Content ◽  
Ash Content ◽  
Nutritional Content ◽  
Katsuwonus Pelamis ◽  
Hedonic Method ◽  
Average Water ◽  
The Mean ◽  
Processed Form ◽  
Current Utilization

the current utilization of nike fish and tuna is still limited to fresh condition. Crackers are a very popular food by all levels of society. Utilization of nike fish and tuna in processed form with longer shelf life has not been done. Nutritional content of both types of fish is a reason in the selection as a basic ingredient in making crackers. The purpose of this research is to know the formulation of nike fish and tuna to the quality of crackers. The observation parameters in this study are the level of favorite or hedonic method, water content, ash content, bloom and texture analizer. The results showed that the average water content of nike fish crackers and skipjack fish from treatment A1 3.3%, treatment A2 3.29%, A3 3.77%. Mean of ash content at treatment of A1 1,97%, treatment of A2 1,55%, treatment of A3 1,58%. The average of A1 is 283,54%, A2 242,75%, A3 182,23%. and the mean of analyzer analyzer test at A1 1185,6%, A2 708,9%, and A3 783,83%. Based on the results and the discussion that has been done on the quality of crackers, it can be concluded that the best formula and liked by the panelists is formula A1

Seasonal variation in ash and calorific content of Idotea baltica (Pallas) (Crustacea:Isopoda)

1978 ◽  
Vol 56 (9) ◽  
pp. 1917-1921 ◽  
Author(s):  
Kim W. Strong ◽  
Graham R. Daborn
Keyword(s):  
Seasonal Variation ◽  
Reproductive Effort ◽  
Calorific Value ◽  
Dry Weight ◽  
Ash Content ◽  
Bomb Calorimetry ◽  
Idotea Baltica ◽  
Calorific Content

Ash, calorific, and carbonate contents were determined monthly for Idotea baltica from Cape Blomidon, N.S. Although changes in calories per gram dry weight (1 cal = 4.1868 J) were correlated with reproductive effort, variations in the ash-free calorific value were difficult to interpret because of considerable changes in ash content. In mature animals, variation in percent ash was apparently associated with gametogenesis but ash variation in immature animals could not be explained. The importance of adequate carbonate corrections in bomb calorimetry is emphasized.

scholarly journals Variability of energy woodchips and their economic effects

2016 ◽  
Vol 58 (2) ◽  
pp. 62-71 ◽  
Author(s):  
Arkadiusz Gendek ◽  
Tomasz Nurek
Keyword(s):  
Power Plant ◽  
Water Content ◽  
Quality Parameters ◽  
Ash Content ◽  
Economic Effects ◽  
Physical Parameters ◽  
Transport Distance ◽  
Green Matter ◽  
Forested Areas ◽  
Average Water

Abstract The main aim of the work is to assess physical parameters of forest woodchips and their impact on the prices achieved by the supplier in transactions with a power plant. During fragmentation of logging residue, high content of green matter and contaminants negatively impacts the quality parameters that serve as basis for settlements. The analysis concerns data on the main parameters - water content, fuel value, sulphur and ash content - from 252 days of deliveries of forest chips to a power plant. The deliveries were realised from forested areas on an average about 340 km from the plant. Average water content and the resultant fuel value of forest chips was within 27-47% and 8.7-12.9 GJ×Mg-1 (appropriately), respectively. They depend on the month in which they are delivered to the power plant. The threshold values for the above-mentioned parameters are set by the plant at a real level and the suppliers have no problems with meeting them. The parameter that is most frequently exceeded is ash content (11.5% of cases). The settlement system does not differentiate on the basis of the transport distance but gives possibility to lower the settlement price when the quality parameters are not met but provides no reward for deliveries with parameters better than the average ones. On the basis of results obtained, it was calculated that average annual settlement price is lower than the contract price by about 0.20 PLN×GJ-1, which in case of the analysed company may translate into an average daily loss of about 700 PLN.

Influence of cultural practices on the relationship between frost tolerance and water content of containerized black spruce, white spruce, and jack pine seedlings

1993 ◽  
Vol 23 (3) ◽  
pp. 503-511 ◽  
Author(s):  
Sophie Calmé ◽  
Hank A. Margolis ◽  
Francine J. Bigras
Keyword(s):  
Water Content ◽  
Cultural Practices ◽  
Black Spruce ◽  
Dry Weight ◽  
White Spruce ◽  
Frost Tolerance ◽  
Jack Pine ◽  
Bud Formation ◽  
The Relationship ◽  
Short Days

Two experiments were performed to study how cultural practices influenced the relationship between frost tolerance and water content of black spruce (Piceamariana (Mill.) B.S.P.), white spruce (Piceaglauca (Moench) Voss), and jack pine (Pinusbanksiana Lamb.) seedlings. In the first experiment, first-year black spruce seedlings were subjected to 14-d mid-August treatments of short days of 8 h or to natural day length, during which time seedlings were either irrigated or not. In the second experiment, first-year white spruce, black spruce, and jack pine seedlings were fertilized at two levels, normal or double, during the growing season. In the fall, we followed the evolution of frost tolerance, water content (dry weight to fresh weight ratio), height and diameter growth, bud formation, and mineral concentrations of shoots and roots. In the first experiment, short days accelerated frost acclimation, drop in water content, and bud formation. Short days with no irrigation triggered the cessation of height growth. In the second experiment, normal fertilization slightly improved frost tolerance in white spruce. Diameter growth (except for white spruce) and bud formation were enhanced by high nitrogen concentration, whereas no significant effect of fertilization could be found on height growth and water content. In both experiments, the relationship between frost tolerance and water content was independent of treatments and indicated that nontolerant seedlings (lethal temperature for 50% of the seedlings > −10 °C) had dry weight to fresh weight ratios of less than 30% for the three species. Thus, this rapid method of evaluating frost tolerance could be useful to seedling producers in eastern Canada and might be applicable to other species in other regions as well.

scholarly journals THE EXTRACTION OF BROWN ALGAE (Sargassum sp) THROUGH CALCIUM PATH TO PRODUCE SODIUM ALGINATE

2018 ◽  
Vol 7 (1) ◽  
pp. 64-69
Author(s):  
Octovianus S. R. Pasanda ◽  
Abdul Azis
Keyword(s):  
Water Content ◽  
Brown Algae ◽  
Linear Chain ◽  
Dry Weight ◽  
Extraction Process ◽  
Extraction Methods ◽  
Ash Content ◽  
Water Soluble ◽  
Raw Material ◽  
Total Dry Weight

Brown algae is a source of sodium alginat raw material. One type of brown algae that is found to grow in Indonesian waters is Sargassum echinocarphum. Brown algae including one type of seaweed that grows in many waters of Indonesia, especially the waters of Eastern Indonesia. Alginat is a pure polysaccharide of uronic acid contained in a brown algae cell wall arranged in the form of long linear chain alginic acids with levels reaching 40% of the total dry weight. The alginat form in general is sodium alginat, a water soluble alginat salt. The purpose of this research is to know the quality of alginat include alginat rendamen, water content, ash content, and viscosity. Conventional extraction methods from brown algae into sodium alginat produces the highest yield percentage of 32.42%, resulting from the extraction for 7 hours at 60 C. The lowest average yield percentage resulted in 5 hours extraction process of 2.78%, the average water content of 20.37 - 23.30%, the mean ash content of 22.28 - 34.87%, and the viscosity ranged between 18, 0 - 19.8 Cp.

scholarly journals KUALITAS DAGING BEKU, DINGIN DAN SEGAR: PH DAN ZAT GIZI MAKRO

2019 ◽  
Vol 41 (1) ◽  
pp. 21-30
Author(s):  
Fitrah Ernawati ◽  
Nelis Imanningsih ◽  
Nunung Nurjanah ◽  
Ema Sahara ◽  
Dian Sundari ◽  
...  
Keyword(s):  
Water Content ◽  
Dry Weight ◽  
Nutrient Content ◽  
Cross Sectional Study ◽  
Ash Content ◽  
T Test ◽  
Cross Sectional ◽  
Traditional Markets ◽  
Weight Protein

ABSTRACT Beef is one of the animal livestock that contain nutrient with a good bioavalibility. The objective of the study was to evaluate the nutrient content of frozen, cold, and fresh beef. The material of the study was cube roll, chuck dan blade. The location of beef sampling was done in three traditional markets and three supermarkets by 2016. The design of the study was cross-sectional study. The observed variables were  market type, beef condition and beef section, while the dependent variable includes pH, proximat (water content, ash content, fat, and protein). The data were  analyzed by t-test and ANOVA. The results showed that nutrient content did not differ between frozen, cold and fresh beef in both traditional markets and supermarkets, except the protein. Protein content in cold beef was higher than frozen beef (p <0.05). Beef had a water content of 63,39-74,66 %; ash content 2,91-4,19 % dry weight; protein 54,42-79,18 % dry weight; fat 9,57-37,32 % dry weight and had a pH of 5,23-5,64. Fresh, cold and frozen beef that came from traditional markets and supermarkets still had a good quality. Freezing beef that does not exceed a month could  maintain the nutritional quality of beef.   Keywords: freezing beef, fresh beef, frozen beef, nutrient content   ABSTRAK Daging merupakan salah satu bahan pangan asal ternak yang mengandung zat-zat gizi  dengan mutu yang sangat baik. Tujuan dari penelitian adalah untuk mengevaluasi kandungan zat gizi daging beku, dingin, dan segar. Desain penelitian adalah potong lintang. Lokasi sampling daging dilakukan di tiga pasar tradisional dan tiga pasar swalayan, pada tahun 2016. Variabel bebas terdiri dari jenis  pasar, kondisi daging, bagian daging, sedangkan variabel terikat meliputi  pH, proksimat (kadar air, kadar abu, lemak dan protein). Analisis data menggunakan uji T (t-test) dan analisis varians (ANOVA). Hasil penelitian menunjukkan bahwa kandungan gizi tidak berbeda antara daging segar, dingin, dan beku baik di pasar tradisional maupun swalayan, kecuali kadar protein. Kandungan protein pada daging dingin lebih tinggi dibandingkan daging beku (p<0,05). Daging memiliki kandungan air 63,39-74,66 %; abu 2,91-4,19 % berat kering; protein 54,42-79,18 % berat kering; lemak 9,57-37,32 % berat kering dan memiliki kadar pH 5,23-5,64. Daging segar, dingin dan beku yang berasal dari pasar tradisional dan pasar swalayan masih memiliki kualitas yang baik. Pembekuan daging yang tidak melebihi satu bulan dapat mempertahankan kualitas gizi daging.   Kata kunci:  daging beku, daging dingin, daging segar, pembekuan daging, kadar protein

Perbandingan Mutu Tempe Dari Kacang Kedelai Dengan Kacang Tanah

1970 ◽  
Vol 2 (1) ◽  
pp. 43-46
Author(s):  
Riska Ahsanunnisa
Keyword(s):  
Chemical Analysis ◽  
Water Content ◽  
Ash Content ◽  
Organoleptic Test ◽  
Quality Testing ◽  
Long Time ◽  
Average Water

Tempe is traditional Indonesian food that has been known for a long time. Research on the quality of tempe with variations of peanut and soybean aims to see the variation of tempe making using peanut and soybean. Quality testing in this study through organoleptic test and chemical analysis such as water content, and ash content. The result of organoleptic test on flavour showed that panelist preferential T2 much higher than T1. The average water content respectively were 59,11% for soybean and 55,17% for peanut. Meanwhile the average ash content the highest were soybean 0,67% and for the peanut were 0,59%.

Seasonal variation in two species of unionid clams from Manitoba, Canada: respiration

1982 ◽  
Vol 60 (4) ◽  
pp. 560-564 ◽  
Author(s):  
Judith D. Huebner
Keyword(s):  
Oxygen Consumption ◽  
Seasonal Variation ◽  
Dry Weight ◽  
Anodonta Grandis ◽  
Seasonal Acclimation

Respiration is proportional to the 0.769 power of dry weight for Anodonta grandis and the 0.898 power of dry weight for Lampsilis radiata at all temperatures and in all months tested. The log of oxygen consumption increases linearly with temperature for both species up to 24 °C. Q10 values are high but show no season-, temperature-, or size-related relationships. There is no evidence of seasonal acclimation of respiration in either species.

Determination of Tensile Strength of Compacted Loess by Double Punch Test

2011 ◽  
Vol 194-196 ◽  
pp. 1176-1179 ◽  
Author(s):  
Xiao Jun Li ◽  
Ying Ran Liu ◽  
Li Hua Jiang ◽  
Yi Chuan Tang
Keyword(s):  
Tensile Strength ◽  
Water Content ◽  
Dry Weight ◽  
Brazilian Test ◽  
Punch Test ◽  
Weight Density ◽  
The Relationship ◽  
Water Contents ◽  
Compacted Loess

Through double punch test, the tensile strength of compacted loess is determined under different water contents and different dry densities, the relationship between tensile strength, water content and the dry weight density is discussed, and their relationship is established. Comparing with Brazilian test, it proved the feasibility of determining tensile strength of compacted loess with double punch tests.

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