Electroless plating of copper at a low pH level

1993 ◽  
Vol 37 (2) ◽  
pp. 117-124 ◽  
Author(s):  
R. Jagannathan ◽  
M. Krishnan
Keyword(s):  
Electroless Plating ◽  
Low Ph ◽  
Ph Level

Simulation of pH level distribution inside a coiled flow inverter for continuous low pH viral inactivation

2019 ◽  
Vol 117 (2) ◽  
pp. 429-437 ◽  
Author(s):  
Laura David ◽  
Lisa Marie Waldschmidt ◽  
Martin Lobedann ◽  
Gerhard Schembecker
Keyword(s):  
Low Ph ◽  
Viral Inactivation ◽  
Ph Level

scholarly journals The Effect Of Giving Honey on The Process of Wound Healing in Burned Patients

2021 ◽  
Vol 5 (1) ◽  
pp. 51-56
Author(s):  
Intan Pramesty
Keyword(s):  
Staphylococcus Aureus ◽  
Wound Healing ◽  
Healing Process ◽  
Health Sector ◽  
Antimicrobial Properties ◽  
High Viscosity ◽  
Low Ph ◽  
Wound Healing Process ◽  
Burn Patients ◽  
Ph Level

Backgroud: Burns are one of the most dangerous injuries and the main cause of disability to death. Burns can be interpreted as one of the serious problems in society and are recorded to cause around 265,000 deaths each year. Honey can maintain the wound condition to keep it moist and in high viscosity to prevent infection. Method: This study was conducted to determine the effect of honey on the wound healing process in burn patients. This study uses a literature review method. The population in this study is a journal with a background in the health sector with 10 international journals on burns with the qualifications of 9 SCIMAGO indexed journals and 1 SINTA indexed journal published from 2015 to 2020. Results: Burns that treated in the form of pure honey can generate good results and heal in an average of 20 days. The healing process will be better, if the wound given a mixture of other ingredients which also have a low acidity such as garlic, chitosan and beeswax and olive oil. Honey has antimicrobial properties and a low pH level. The microbe most sensitive to honey is Staphylococcus aureus. Conclusion: The conclusion from this study, honey can be used as an alternative treatment for burns.

scholarly journals Acellular probiotics and asparagic acid in the prevention of postpartum endometritis in cows

2020 ◽  
pp. 14-20
Author(s):  
P. Krasochko ◽  
T. Snitko
Keyword(s):  
Lactic Acid ◽  
Aspartic Acid ◽  
Uterine Cavity ◽  
Animal Husbandry ◽  
Low Ph ◽  
Stress Factors ◽  
Acid Complex ◽  
Local Immunity ◽  
Fermentation Products ◽  
Ph Level

Postpartum endometritis is one of the most widespread pathologies in animal husbandry. They often occur on the background of exposure on animals stress factors, microclimate disorders, complete feeding, which is accompanied by decrease of the resistance, leads to increasing morbidity, etc. The aim of the research is to develop a method of prevention of postpartum endometritis in cows using cell-free probiotics "Bacinil" and "Lactimet" with 4 % suspension of aspartic acid. Complex use of integrated cell-free probiotics "Bacinyl" and "Lactimet" with 4% suspension of asparagic acid for the prevention of postpartum endometritis in doses of 7.5 and 10 ml each at 3-fold use once a day for 3 days in a row allowed to obtain 100% preventive efficacy. The mechanism of action of probiotic "Bacinil" is based on the high activity of components of its composition - immunostimulants (lipopolysaccharides), bacteriocins and enzymes, probiotic "Lactimet" due to biosynthetic lactic acid and a complex of fermentation products. Complex application of probiotics and aspartic acid increases their bacteriostatic activity, which allows more actively suppress the proliferation of pathogenic and opportunistic microflora, complicating the flowing of postpartum endometritis; promotes liquefaction of exudate accumulated in the uterine cavity due to enzymes included in probiotic "Bacinil"; leads to activation of local immunity of endometrial tissues due to immunostimulating activity of components of "Bacinil" and "Lactimet" probiotics; creation of low pH level in the uterine cavity due to aspartic acid and biosynthetic lactic acid. Key words: cows, postpartum endometritis, prophylaxis, acellular probiotics, aspartic acid.

A POTATO TUBERS TREATMENT INFLUENCE ON PHYTOSANITARY STATE OF POTATO PLANTINGS AND YIELD

1970 ◽  
pp. 71-73
Author(s):  
М. N. Zakharova ◽  
L. V. Rozhkova
Keyword(s):  
Sandy Loam ◽  
Humus Content ◽  
Field Tests ◽  
Low Ph ◽  
High Yield ◽  
Potato Tubers ◽  
Collective Farm ◽  
Colorado Beetle ◽  
Phosphorous Content ◽  
Ph Level

According to ISA - a branch of the FSBNU FNAC VIM in the conditions of the region from weed vegetation, pathogens of fungal, bacterial and viral diseases, a complex of soil-killing and terrestrial pests the loss of potato harvest is 30-40%. In 2019-2020 the preparations for the treatment of Gala tubers variety were tested on the V.I. Lenin collective farm in the Kasimovskiy district (Ryazan region) in accordance with the following scheme: 1. Tabu Super, VSK – 0.5 l/t + Maxim, KS – 0.4 l/t; 2. Tabu Super, VSK – 0.5 l/t + Sinclair, SC – 0.2 l/t; 3. Prestige, KS – 1.0 l/t + Regent, VDG – 0.08 kg/t + Aktara,VDG – 0.1 kg/t + Maxim, KS – 0.4 l/t. 4. Quadris, SK – 0.4 l/t + Regent, VDG – 0.08 kg/t (economic option). The area of cultivated plot is 10 hectares, the accounting area is 10 m2 and the four-time replication. The soil of the site is sod-podzolic-gley sandy loam, humus content is 0.9%, potassium – content is medium, phosphorous content is low, pH level – 5.1, the predecessor was winter wheat. As a result of field tests of fungicides and insecticides used for pre-planting treatment of potato tubers, it was found that in the region the tested drugs effectively protected the crop plants from risoctoniasis and damage to the Colorado beetle. The use of the drugs studied contributed to a high yield of potato tubers 55.5 - 60.0 tons/ha and high - above 89% output of standard tubers.

Instability of spring environmental conditions as a driver of biotic interactions and crustacean structuring in meteorite crater ponds (Morasko, Poland)

2016 ◽  
Vol 45 (1) ◽  
Author(s):  
Kasper Świdnicki ◽  
Anna M. Basińska ◽  
Natalia Kuczyńska-Kippen
Keyword(s):  
Nature Reserve ◽  
Abiotic Factors ◽  
Biotic Interactions ◽  
Oxygen Depletion ◽  
Low Ph ◽  
Environmental Drivers ◽  
Spring Season ◽  
Copepod Community ◽  
Meteorite Crater ◽  
Ph Level

AbstractThere are 150 meteorite craters worldwide, however, their aggregations are rarely noted. The nature reserve ‘Meteoryt Morasko’ in Poland with fishless meteorite ponds was analyzed as a unique ecosystem for biological analysis of invertebrate interactions. The aim of the study was to recognize the main environmental drivers of cladoceran and copepod community structure from among biotic (competitors and predators) and abiotic factors (i.e. oxygen and pH level) in the spring season.The abundance of small cladocerans (The temporary character of the examined ponds, oxygen depletion and low pH of water in the shallowest pond resulted in the abundant occurrence of cladoceran males, whose high densities are usually observed in autumn.

scholarly journals Effect of pH on the Formation of Amorphous TiO2 Complexes and TiO2 Anatase during Pyrolysis of Aqueous TiCl4 Solution

2020 ◽  
Author(s):  
Mai Van Tuan ◽  
Mai Xuan Dung ◽  
Duong Ngoc Huyen
Keyword(s):  
Heat Treatment ◽  
Methylene Blue ◽  
Low Temperature ◽  
Low Ph ◽  
Effect Of Ph ◽  
Amorphous Tio2 ◽  
Ph Level ◽  
Tio2 Nanostructures ◽  
Tio2 Nanostructure

The TiO2 nanostructures resulted by pyrolysis of TiCl4 at low temperature of 80 oC are found to be a mixture of amorphous TiO2 complexes and anatase nanostructure whose ratio depends on the pH of the pyrolysis medium. At low pH level, the resulting TiO2 nanostructure is predominant anatase and gradually shifts to the amorphous TiO2 complexes with pH level increasing. By means of heat treatment, the amorphous TiO2 complexes can be converted back to the anatase nanostructure and then transform to rutile with the elevating temperature. Amongst of the TiO2 nanostructure recovered from amorphous TiO2 complexes, the anatase shows to be the most effective photocatalyst in decomposition of methylene blue.

scholarly journals The Effect of Low pH Level on Zebrafish (Danio Rerio) Reproductive Performance

2020 ◽  
Vol 2 (1) ◽  
pp. 15-20
Author(s):  
Ikram Ismail ◽  
Siti Ariza Aripin
Keyword(s):  
Danio Rerio ◽  
Reproductive Performance ◽  
Fish Population ◽  
Low Ph ◽  
Control Treatment ◽  
Hatching Rate ◽  
Chemical Waste ◽  
Fertilisation Rate ◽  
Vertebrate Model ◽  
Ph Level

Danio rerio or commonly known as zebrafish are a very popular fish among scientists and also a well-known vertebrate model species widely used in research. Zebrafish, are also a popular species among aquarists and have been put in aquariums all around the world as ornamental fish. The acid rain phenomenon has lowered the pH level of the wild habitat of zebrafish by shifting it to a more acidic pH level. This study was carried out to observe the effect of low pH level on the reproductive performance of zebrafish. The zebrafish were quarantined for a week to make sure they were healthy to be used in the experiment. The zebrafish were reared continuously for 14 days in three different pH treatments T1 (pH 2-4), T2 (pH 4-6), T3 (pH 6-8)). T3 (pH 6-8) was used as the control treatment. Hydrochloric acid (HCl) was used to control the pH level of treatments T1 (pH 2-4), T2 (pH 4-6), T3 (pH 6-8) with three replicates of each treatment. The male chasing female frequency was significant (p: 0.0001) and the data showed the highest frequency (2568.000±140.6272) at treatment 3 (pH 6-8). For the spawning frequency of zebrafish, treatment 3 (pH 6-8) showed the highest value (4.000±0.5774) followed by treatment 2 and treatment 1 and the data was significant (p: 0.0004). The fertilisation rate of the zebrafish was significant (p: 0.0001) and the highest was shown at T2 (pH 4-6) with 89.8018±0.3782, followed by T3 and treatment T1. For the hatching rate of the zebrafish, the data collected were significant (p: 0.0002) and the highest value of 2.9350±0.4070 was shown at T3 (pH 6-8), followed by T2 (pH 4-6) and T1 (pH 2-4). The overall result showed that pH 2-4 had the worst effect on the reproductive performance of zebrafish. Therefore, low pH has a significant effect on reducing the reproductive performance of zebrafish. The local fish population can be affected by the decrease of pH level due to acid rains and chemical waste pollution.

scholarly journals Effect of different water pH on hatching and survival rates of African catfish Clarias gariepinus (Pisces: Clariidae)

2019 ◽  
Vol 4 (2) ◽  
pp. 80-88
Author(s):  
Kasi Marimuthu ◽  
Harysooria Palaniandya ◽  
Zainal A. Muchlisin
Keyword(s):  
Water Quality ◽  
Incubation Period ◽  
Clarias Gariepinus ◽  
Survival Rates ◽  
Larval Survival ◽  
Low Ph ◽  
African Catfish ◽  
Hatching Rate ◽  
Water Ph ◽  
Ph Level

Water quality parameters influence the growth and survival of different stages of fishes and hence determining the optimal water quality variables is greatly important for any aquaculture farming. Among the variables, water pH is considered the key factors and plays an important role in the maintenance of the homeostasis in fishes. A study was conducted to determine the influence of different water pH on the incubation period, hatching rate and survival rate of African catfish (Clarias gariepinus) larvae. The fertilized eggs were incubated at 28.0 ± 1.0 °C with different levels of water pH ranging from 3-10. Twenty four pH levels were tested for incubation period and egg hatchability while 15 pH levels were tested for larval survivability in a completely randomized design with three replicates for each treatment. Just hatched larvae were used for this study and the effect was observed until 72 h post-hatching. Water pH was maintained by the addition of NaOH or H2SO4solutions. The incubation times of fertilized eggs were recorded to be 23.5–25.0 h at pH levels of 6.1–8.8. The increased incubation time was noticed at the rest of the acidic and alkaline pH levels. Significantly highest hatching rate was observed at the pH levels of 6.7–7.6 compared to those at lower and higher pH levels (P0.05). However, no significant differences (P0.05) were recognized in the hatching rates at the pH levels of 6.7 – 7.6. No hatching occurred at low pH levels between 3.1 and 3.4 and at high pH of 10. After 72 h of exposure to different pH levels, no larvae survived at pH levels below 4.5 and above 9.0.  Highest larval survival (98%) was observed at pH 7.0 followed by 94% at pH 7.5 and 92% at pH 6.5. The results obtained in the present study revealed embryos and larvae can survive and tolerate to a low pH level of 3.7 and 4.5, respectively but the survival rates decreased with decreasing pH levels. Therefore, a water pH level of 6.7–7.5 is highly recommended for optimal hatching and highest larval viability of C. gariepinus.

scholarly journals The role of pH in Tuber aestivum syn. uncinatum mycorrhiza development within commercial orchards

2013 ◽  
Vol 47 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Paul W. Thomas
Keyword(s):  
Soil Ph ◽  
Calcareous Soils ◽  
Low Ph ◽  
Tuber Aestivum ◽  
Truffle Cultivation ◽  
Data Points ◽  
Ph Level ◽  
A Site ◽  
Optimal Ph

The accepted advice when establishing a plantation of <em>Tuber aestivum</em> syn. <em>uncinatum</em> is that young inoculated trees should be planted on calcareous soils with a naturally high pH level. When a site is employed that has a naturally low pH level, lime is often applied to raise the pH to a considered ideal level of c.7.5. However, this may not be the correct approach. Here we present data from 33 data points taken from commercial truffle orchards in England, UK. Soil pH is correlated to <em>Tuber aestivum</em> syn. <em>uncinatum</em> mycorrhiza survivorship and development. The optimal observed pH was 7.51 but the actual optimal pH for cultivation may be higher. Sub optimal pH levels lead to a reduction of <em>Tuber aestivum</em> syn. <em>uncinatum</em> mycorrhiza. This reduction is not permanent and mycorrhization levels may be improved within a 12 month period by amending the soil pH. The importance of understanding the interaction of pH with other variables and the results in relation truffle cultivation are discussed.

scholarly journals A red tide alga grown under ocean acidification up-regulates its tolerance to lower pH by increasing its photophysiological functions

2014 ◽  
Vol 11 (5) ◽  
pp. 6303-6328 ◽  
Author(s):  
S.-W. Chen ◽  
J. Beardall ◽  
K.-S. Gao
Keyword(s):  
Ocean Acidification ◽  
Red Tide ◽  
Co2 Enrichment ◽  
Low Ph ◽  
Photochemical Quenching ◽  
Carbonate Chemistry ◽  
Phaeocystis Globosa ◽  
Seawater Acidification ◽  
Short Term Exposure ◽  
Ph Level

Abstract. Phaeocystis globosa, a red tide alga, often forms blooms in or adjacent to coastal waters and experiences changes of pH and seawater carbonate chemistry caused by either diel/periodic fluctuation in biological activity, human activity or, in the longer term, ocean acidification due to atmospheric CO2 rise. We examined the photosynthetic physiology of this species while growing it under different pH levels induced by CO2 enrichment and investigated its acclimation to carbonate chemistry changes under different light levels. Short-term exposure to reduced pHnbs (7.70) decreased the alga's photosynthesis and light use efficiency. However, acclimation to the reduced pH level for 1–19 generations led to recovered photosynthetic activity, being equivalent to that of cells grown under pH 8.07 (control), though such acclimation required a different time span (number of generations) under different light regimes. The low-pH grown cells increased their contents of chlorophyll and carotenoids with prolonged acclimation to the acidification, with increased photosynthetic quantum yield and decreased non-photochemical quenching. The specific growth rate of the low-pH grown cells also increased to emulate that grown under the ambient pH level. This study clearly shows that Phaeocystis globosa is able to acclimate to seawater acidification by increasing its energy capture and decreasing its non-photochemcial energy loss.

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