The Chemical Composition of Lipid Globules in the Neurones of Helix Aspersa

1957 ◽  
Vol s3-98 (41) ◽  
pp. 59-64
Author(s):  
J.T. Y. CHOU
Keyword(s):  
Chemical Composition ◽  
Golgi Apparatus ◽  
Helix Aspersa ◽  
The Third ◽  
Histochemical Tests

1. The three kinds of globules that can be recognized in the living neurone of Helix aspersa are sharply distinguishable from one another by histochemical tests. 2. One kind of globule contains phospholipid; another appears to consist of trioglyceride; the third is complex chemically, containing mixed lipids with some protein and carbohydrate. 3. When osmium techniques for the ‘Golgi apparatus’ are applied to this particular cell, phospholipid is blackened.

scholarly journals Slaughter Qualities and Chemical Composition of the Meat of the Broiler Chickens Fed with Thyme Extract

2019 ◽  
Vol 8 (10) ◽  
pp. 4113-4117
Keyword(s):  
Chemical Composition ◽  
Broiler Chickens ◽  
Reference Group ◽  
Dispersion Analysis ◽  
Anatomical Dissection ◽  
The Third ◽  
Broiler Farm ◽  
Low Temperature Drying ◽  
Positive Effect ◽  
Effect Of Feeding

The effect of various dosages of the extract of the thyme medicinal plant on the slaughter qualities and the chemical composition of the meat of broiler chickens has been studied. The preparation was obtained by the method of water-ethanol extraction followed by low-temperature drying at the Agroecologia research laboratory of the Kuzbass State Agricultural Academy. The scientific economic experiment with the duration of 40 days was performed with broiler chickens of the Hubbard ISA F 15 cross at the broiler farm. One reference and five experimental groups of day-old broiler chickens were formed, 37 chickens in each group. The chickens in the reference group received basic diet, while the broilers in the experimental groups additionally received thyme extract in the following daily dosages: the first — 2 mg/kg, the second — 4 mg/kg, the third — 6 mg/kg, the fourth — 8 mg/kg, and the fifth — 10 mg/kg of body weight. At the end of the studies, the positive effect of feeding thyme extract on the characteristics of anatomical dissection of broiler chickens' carcasses was found. In the third, the fourth, and the fifth experimental groups, no significant differences were found, compared to the reference group. By the results of dispersion analysis of the data, a significant effect of thyme extract on the contents of lysine, threonine, and methionine has been found by the amino acid composition of the meat of broiler chickens.

scholarly journals CHEMICAL COMPOSITION OF VARIETY OF HERBAGE MIXTURESVERSUSCONSTITUENTS AND SOWING TIME IN THE ARID STEPPE ZONE OF KAZAKHSTAN

2021 ◽  
Vol 56 (1) ◽  
pp. 69-74
Author(s):  
А.I. Kurbanbayev ◽  
◽  
А.A. Baitelenova ◽  
A.B. Abdirova ◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Nutritional Quality ◽  
Crude Protein ◽  
Steppe Zone ◽  
Sowing Time ◽  
Barnyard Millet ◽  
Sudan Grass ◽  
The Third ◽  
Arid Steppe ◽  
Control Variant

The article describes the nutritional quality and chemical composition of a variety of herbage mixtures versus on the sowing time and constituents in the arid steppe zone of Kazakhstan. The biennium average data for the study years are given. The second and third decades of May were chosen as the sowing date. Three types of herbage mixtures were investigated in two sowing periods: 1. barley, peas, Sudan grass, hybrid of sorghum-Sudan grass, rapeseed; 2. barley, peas, Sudanese grass, hybrid of sorghum-Sudan grass, barnyard millet; 3. barley, peas, hybrid sorghum-Sudan grass, African millet. In the course of the sowing period, the content of crude protein in the herbage mixtures in the third decade of May was as high as in nitrogen-free extracts (NFE). Depending on the components of the herbage mixtures, the highest indicator of crude protein in the mixture of African millet was 2.87% and 2.74%. NFE in the herbage mixture of cockspur was higher by 0.07-0.16% than in the control variant (herbage mixture with rapeseed). Periods of emergence and germination of grain varieties in the composition of herbage mixtures coincided with the July precipitation, expressed by good leaf coverage, high content of crude protein, carotene, NFE compared to the control variant. The optimum sowing life, in terms of nutritional quality, chemical composition of herbage mixtures with African millet and barnyard millet in the dry steppe zone of Kazakhstan, was the third decade of May.

Histochemical studies on bovine sweat glands

1952 ◽  
Vol 42 (1-2) ◽  
pp. 155-158 ◽  
Author(s):  
S. H. Yang
Keyword(s):  
Alkaline Phosphatase ◽  
Chemical Composition ◽  
Sweat Glands ◽  
Zebu Cattle ◽  
Limited Extent ◽  
Sebaceous Glands ◽  
Histochemical Tests

1. Histochemical tests have been applied to the socalled sweat glands and their secretions of Zebu and Ayrshire cattle, the former to only a limited extent.2. For skin specimens of Ayrshire cattle positive reactions were obtained for ribonucleoprotein, arginine and alkaline phosphatase. Negative reactions were obtained for desoxyribonucleoprotein and acid glycerophosphatase.3. Neither the sweat glands of Ayrshire cattle nor those of Zebu cattle gave positive reactions for fats, lipids or cholesterol and its esters, although these were all present in the sebaceous glands of both breeds. Detectable amounts of phospholipid were not found in the sweat glands of the Ayrshire cattle and their secretions.4. The chemical composition of the secretion of bovine sweat glands differs markedly from that of human eccrine or apocrine sweat glands in not containing detectable amounts of glycogen, lipids and associated compounds or iron.

Novel exocrine glands in the hindleg tarsi of the ant Nothomyrmecia macrops

2000 ◽  
Vol 48 (6) ◽  
pp. 661 ◽  
Author(s):  
Johan Billen ◽  
Fuminori Ito ◽  
Christian Peeters
Keyword(s):  
Golgi Apparatus ◽  
Secretory Cell ◽  
Anterior Part ◽  
Duct Cell ◽  
Exocrine Gland ◽  
Secretory Cells ◽  
Exocrine Glands ◽  
The Third ◽  
Duct Cells

The third tarsomere of the hindlegs of both workers and queens of Nothomyrmecia macrops is almost entirely filled with a hitherto unknown exocrine gland (which does not occur in the closely related Myrmecia). Each of the approximately 30 secretory cells is connected to the outside via a duct cell. These open individually via large cuticular pores at the mesoventral side of the anterior part of the tarsomere. The diameter of the duct cells is narrow near the secretory cell, but gradually increases towards their opening site. The rounded secretory cells show a well developed Golgi apparatus and numerous clear vesicles. The function of this gland is not yet known, although its opening site may be indicative of the deposition of marking substances. At the mediodistal side of tarsomeres 2, 3 and 4 in the three pairs of legs, a glandular thickening of the epidermal epithelium occurs; this represents another novel exocrine structure in ants. This epithelial gland occurs in both Nothomyrmecia and Myrmecia.

scholarly journals Studies on the synthesis and intracellular transport of lipoprotein particles in rat liver.

1975 ◽  
Vol 64 (2) ◽  
pp. 356-377 ◽  
Author(s):  
H Glaumann ◽  
A Bergstrand ◽  
J L Ericsson
Keyword(s):  
Chemical Composition ◽  
Golgi Apparatus ◽  
Rat Liver ◽  
Golgi Complex ◽  
Intracellular Transport ◽  
High Rate ◽  
Very Low Density Lipoproteins ◽  
Lipoprotein Particles ◽  
Parallel Change ◽  
Rough Er

Lipoprotein particles (d less than 1.03 g/ml) were isolated from rough and smooth microsomes and from the Golgi apparatus of rat liver, and were characterized chemically and morphologically. The rough endoplasmic reticulum (ER) particles were rich in protein (50%) and contained phospholipids (PLP) and triglycerides (TG) in smaller amounts, whereas the lipoprotein particles emanating from the smooth ER, and especially the Golgi apparatus, were rich in TG and PLP, resembling very low density lipoproteins (VLDL) of serum. The difference in chemical composition among the particles was associated with change in size both in situ and in isolated lipoprotein fractions. The rough ER particles were 200-800 A in diameter (mean similar to 420 A); the smooth er particles 200-900 A (mean similar to 520 A); the Golgi particles 350-950 A (mean similar to 580A); and serum VLDL 300-800 A (mean similar to 450 A). Generally, lipoprotein particles were rare in the rough ER, frequent but diffusely dispersed in smooth ER, and occurring mainly in clusters in "secretory vesicles" of the Golgi complex. They were seldom observed in the cisternal compartments of the Golgi complex. At short intervals (less than 15 min), intravenously injected radioactive glycerol was preferentially channelled into TG, whereas at later time points the majority of the isotope was recovered in the PLP. Three TG pools were distinguished: (a) a cytoplasmic pool with a slow turnover rate; (b) a membrane-associated TG pool; and (c) a pool corresponding to the TG moiety of lipoprotein particles, which showed the highest initial rate of labeling and fastest turnover. When, after pulse labeling, the appearance of incorporation of radioactive glycerol into TG or PLP of isolated lipoproteins was followed from one subcellular fraction to the other, a sequence of labeling was noted. During the first interval, TG from both rough and smooth microsomal lipoproteins displayed a high rate of labeling with peak value at 6 min, followed by a quick fall-off, while the Golgi lipoproteins reached maximal level at 10-20 min after administration. There was an interval of 10-15 min before the appearance of labeled VLDL in serum. It is concluded that the assembly of the apoproteins and lipid moieties into lipoprotein particles-presumed to be precursors of liver VLDL-begins in the rough ER and continues in the smooth ER. Also, there is a parallel change in chemical composition and size of the lipoprotein particles as they make their way through the ER and the Golgi apparatus. Some remodeling of the particles may take place in the Golgi apparatus before discharge into the circulation.

Effect of dry or hydrated bentonite on the wool growth and liveweight gain of sheep fed wheat chaff

1992 ◽  
Vol 32 (5) ◽  
pp. 595 ◽  
Author(s):  
PJ Murray ◽  
SG Winslow ◽  
JB Rowe
Keyword(s):  
Drinking Water ◽  
Chemical Composition ◽  
Chemical Characteristics ◽  
The Third ◽  
Wool Growth ◽  
Water Inclusion ◽  
Ad Libitum ◽  
Wheat Chaff

Many reports on the use of bentonite to increase wool growth indicate variable responses and it is often claimed that this variability is related to the chemical characteristics or the form in which the bentonite is fed. This paper describes 3 experiments in which there was consistency in the type and form of the clay. There was also comparison of the effects of dry and hydrated bentonite. In the first experiment, 64 sheep were individually penned and fed wheat chaff ad libitum. Thirty sheep were fed chaff only, 17 sheep received dry bentonite added to their chaff (20 g/kg chaff) and another 17 sheep had 23.7 g/day of bentonite added to their drinking water. Inclusion of bentonite in the drinking water significantly increased wool growth (P<0.05, 14.8%) and increased chaff intake (P = 0.08, 6%). In the second experiment, 105 sheep were penned in groups of 7 and each pen fed wheat chaff ad libitum. Five pens of sheep had dry bentonite added to their chaff (20 g/kg chaff) while another 5 pens had bentonite added to their drinking water (23.7 g/sheep.day). There were 5 pens of sheep which received no bentonite. Inclusion of bentonite either in the drinking water or in the chaff, significantly increased chaff intake (P<0.05, 6%), but had no effect on wool growth. In the third experiment, 60 sheep were divided into 12 groups and each group grazed individual 0.7 ha of cereal stubble. All groups were supplemented with the equivalent of 200 g of lupin grain/sheep.day fed twice weekly and 6 of the groups were watered by buckets containing hydrated bentonite (11.8 g bentonite/L). In experiments 2 and 3, inclusion of bentonite in the diet or in the drinking water had no effect on wool growth (P>0.05) but liveweight gain was significantly increased (P<0.05). It was concluded that the variability in the response to bentonite was not related to its chemical composition or the form in which it is administered and that, on balance, bentonite does not offer a practical or reliable means of increasing wool growth in sheep.

A re-examination of tobermorite

1952 ◽  
Vol 29 (218) ◽  
pp. 960-962 ◽  
Author(s):  
G. F. Claringbull ◽  
M. H. Hey
Keyword(s):  
Chemical Composition ◽  
Current Interest ◽  
Hydrated Silicate ◽  
The Third ◽  
Calcium Silicates ◽  
Hydrated Calcium

Tobermorite, a hydrated silicate of calcium, was described by M. F. Heddle in 1880 from three Scottish localities: two near Tobermory in the island of Mull, and the third a quarry near the pier at Dunvegan in Skye. Further localities for the mineral are Sgfirr nam Boc, Loch Eynort in Skye, and Ardtornish Bay in Morven (Morvern), Argyllshire.Because of marked similarity in chemical composition it has been suggested that tobermorite might be identical with gyrolite. In view of this and of the current interest in hydrated calcium silicates in cement chemistry the species has been re-examined.

Productivity and chemical composition of green biomass from Sudan grass, grown as a second crop, with optimal and insufficient water supply

2021 ◽  
Vol 13 (31) ◽  
pp. 81-86
Author(s):  
Rumen Bazitov ◽  
◽  
Stanimir Enchev ◽  
Keyword(s):  
Chemical Composition ◽  
Field Capacity ◽  
Control Treatment ◽  
Irrigation Regime ◽  
Sudan Grass ◽  
The Third ◽  
Dry Biomass ◽  
Most Significant Change ◽  
Cinnamon Soil ◽  
The Impact

The aim of the present study is to determine the impact of the disturbed irrigation regime on the yield and the chemical composition of Sudan grass, grown as a second crop. To accomplish this goal, a trial was conducted in the experimental field of the Agricultural Institute - Stara Zagora with Sudan grass on meadow-cinnamon soil under irrigated conditions. The following variants have been studied: 1 - without irrigation (control variant); variant 2 - optimal irrigation, 75-80% of field capacity (FC); variant 3 - irrigation as in variant 2, but with the removal of the first watering; variant 4 - irrigation as variant 2, but with the removal of the second irrigation; variant 5 - irrigation as variant 2, but with the removal of the third watering. It was found that when growing Sudan grass as a second crop with optimal irrigation and disturbed irrigation regime done by canceling successive watering, the highest yield of dry biomass is obtained with optimal irrigation including three irrigations. Its yield increased by 24.2% compared to the control treatment. Irrigation of Sudan grass with only the second and the third irrigation in a row, without the first irrigation provided, leads to the lowest yield of dry biomass - 11290 kg / ha. Among the chemical composition indicators, the most significant change is observed in the content of the crude fat, followed by that of the crude fiber and crude protein, depending on the method of growing Sudan grass (with or without irrigation).

Thermal Acclimation of a Central Neurone of Helix Aspersa: I. Effects of Temperature on Electrolyte Levels in the Haemolymph

1979 ◽  
Vol 78 (1) ◽  
pp. 181-186
Author(s):  
C. K. LANGLEY
Keyword(s):  
Chemical Composition ◽  
Helix Aspersa ◽  
Thermal Acclimation ◽  
Magnesium Ions ◽  
Osmotic Concentration ◽  
Calcium Activity ◽  
Calcium And Magnesium ◽  
Effects Of Temperature ◽  
Calcium And Magnesium Ions

1. The chemical composition of the haemolymph of adult snails was significantly altered during thermal acclimation (from 19° to 4°, 12° and 30°C). The osmotic concentration was highest in cold groups (4° and 12°C) and lowest in warm-acclimated animals. 2. The concentration of sodium in the haemolymph was highest in warmand cold-acclimated individuals and lowest at intermediate temperatures (12° and 19°C), and showed significant correlation with [Mg]. 3. Potassium concentrations were also increased during warm and cold (4°C) acclimation, the increase being largest in warm-acclimated individuals. 4. The concentrations of calcium and magnesium ions showed relatively small changes during thermal acclimation. Calcium activity was found to be highest in warm and lowest in cold-acclimated snails. 5. Feeding increased the levels of potassium and calcium most significantly in the warm-acclimated group. 6. pH remained relatively constant in all groups.

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