Changing of Electrical Conductivity, Acidity Function Voltage of Potential Difference for Salicylic Acid and Substituted to Study Adsorption Mechanism on Alumina Surface and the Factors Affecting it

2020 ◽  
Vol 14 (1) ◽  
pp. 6-12
Author(s):  
Khaleel Ibrahim A Al-Niemi ◽  
Chemosphere ◽  
2021 ◽  
Vol 273 ◽  
pp. 129678
Author(s):  
Yingjie He ◽  
Lei Huang ◽  
Baocheng Song ◽  
Bichao Wu ◽  
Lvji Yan ◽  
...  

Author(s):  
Hung Duc Nguyen ◽  
Ngot Van Pham ◽  
Duy Van Nguyen

This study was conducted to investigate the physio-chemical properties and vertical dynamic of the surface sediment (0–5 cm) in riparian mangroves along the Tien river, Tien Giang province. The distribution of riparian mangroves located from the polyhaline zone (transect S1 and S2) to the mesohaline zone (transect S3 and S4) and the oligohaline zone (transect S5). Three plots (10x10 m) per transect were set based on the elevation of the mangrove floor (cm + mean sea level) and dominant plants. A total of 28 sediment samples were collected in December 2016 and April 2017. Seasonal variation of pH, redox potential (Eh), electrical conductivity of saturated extract (ECse), bulk density, sediment organic matter (SOM) and total sulfur (TS) were measured in accordance with the standard protocols. Seasonal trends of vertical erosion and accumulation were tested by the tracer stick method. The ECse values and TS concentrations were higher in the dry season and in transects closed to the estuary (S1, S2 and S3) but these trends weren’t found for pH, Eh, and SOM. In most of the riparian mangroves along the Tiền river, low elevation (0–50 cm) was one of important factors affecting the Eh and ECse. In the rainy season, major changes in vertical erosion and acumulation have occurred in the transects near the mouth of the river.


2018 ◽  
Author(s):  
A. A. Haidry ◽  
L. Sun ◽  
Z. Li ◽  
L. Xie ◽  
Q. Fatima ◽  
...  

2020 ◽  
Author(s):  
zahra khazaei ◽  
Asghar Estaji

Abstract Background: Drought is also one of the most widespread abiotic stresses that adversely effects the growth and development of plants. To investigate the effect of salicylic acid and drought stress on several physiological and chemical reactions in sweet pepper plants, the experiment was achieved as a factorial based on a completely randomized design in greenhouse. Drought stress levels were non-stress conditions (irrigation with field capacity), moderate stress (30% field capacity irrigation) and intense water stress (60% field capacity irrigation) and three concentrations of salicylic acid included 0 (as control), 0.5 and 1 mM were sprayed on the plant in three to four leaf stages. Results: The results showed that drought decreased fresh and dry weight of shoots and roots, leaf relative water content (RWC), fruit diameter and length, the index including chlorophyll and leaf area and increased electrical conductivity (EC), antioxidant activity, total phenolic content, ascorbate, polyphenol oxidase (PPO) and ascorbate peroxidase (APX) activity. After application of foliar salicylic acid, all of the above parameters, except the electrical conductivity content, increased. Conclusions: From the results of this experiment it is concluded that salicylic acid provides a better tolerance for drought stress in pepper plant through its influence on vegetative, biochemical and physiological characteristics.


2020 ◽  
Vol 142 (11) ◽  
Author(s):  
Yan Chen ◽  
Hong Liang

Abstract We report a tribo-electrochemical configuration to conduct in situ measurement of electrical conductivity and thickness of lubricating oils against friction. Results showed the non-ohmic behavior of a lubricating film in the hydrodynamic regime. Properties of lubricants and testing conditions are factors affecting the performance. The approach reported here opens windows for future investigation in the fundamentals of lubrication and alternative design of next-generation lubricants.


2014 ◽  
Vol 6 (3) ◽  
pp. 349-353 ◽  
Author(s):  
Alka Jagdish DANGASH ◽  
Neeta PANDYA ◽  
Ashish BHARILLYA ◽  
Ashween JHALA ◽  
Dharamchand JAIN

Artemisinin is a sesquiterpene lactone found in Artemisia annua having many medicinal properties. Therefore the factors affecting trichome initiation are important. In the present study, several strategies have been adapted to increase artemisinin production by treating them with nutrients, hormones and elicitors. Abscisic acid, Gibberellic acid (GA3), a combination of GA3+IAA (Gibberellic acid+indole acetic acid), Chitosan, Methyl jasmonate, Acetyl salicylic acid, Lead acetate, sodium chloride, and Nanozime were sprayed on plant at regular intervals. The glandular trichomes of leaves from Artemisia annua (Asteraceae) were examined by light and scanning electron microscopy and the percentage artemisnin content was analyzed by HPTLC. Maximum artemisinin content % and trichome index (0.128) was found when methy jasmonate was applied and minimum artemisinin content % and trichome index was reported in NaCl & acetyl salicylic acid.


2015 ◽  
Vol 38 (5) ◽  
pp. 1345-1357 ◽  
Author(s):  
SAHEED A ADIO ◽  
MOHSEN SHARIFPUR ◽  
JOSUA P MEYER

2020 ◽  
Vol 33 (4) ◽  
pp. 1092-1101
Author(s):  
ANDRÉ ALISSON RODRIGUES DA SILVA ◽  
GEOVANI SOARES DE LIMA ◽  
CARLOS ALBERTO VIEIRA DE AZEVEDO ◽  
LUANA LUCAS DE SÁ ALMEIDA VELOSO ◽  
HANS RAJ GHEYI

ABSTRACT The search for alternatives that enable the use of saline waters in agriculture has become constant. In this context, the objective was to evaluate the effects of salicylic acid in mitigating salt stress effects on the growth and gas exchange of soursop cv. ‘Morada Nova’. The study was conducted in a greenhouse, in the municipality of Campina Grande - PB, Brazil. Treatments were distributed in randomized blocks, in a 5 x 4 factorial arrangement, corresponding to five levels of electrical conductivity of irrigation water - ECw (0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1) and four concentrations of salicylic acid - SA (0; 1.2; 2.4 and 3.6 mM), with three replicates. Irrigation with saline water compromised the growth and gas exchange of soursop cv. ‘Morada Nova’. However, exogenous application of salicylic acid induced tolerance to salt stress in soursop plants, as their growth, transpiration, stomatal conductance, photosynthesis and instantaneous carboxylation efficiency were favored by the application of salicylic acid, even when exposed to water salinity.


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