ORCID Profile
0000-0002-4132-4808
Current Organisation
Universitas Jember
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Publisher: IOP Publishing
Date: 04-2018
Publisher: IOP Publishing
Date: 10-2017
Publisher: Pushpa Publishing House
Date: 07-11-2017
DOI: 10.17654/MS102091925
Publisher: IOP Publishing
Date: 11-2018
Publisher: IOP Publishing
Date: 03-2020
DOI: 10.1088/1742-6596/1493/1/012026
Abstract: It has been investigated by molecular dynamics method the effect of oxygen injection for Ti 3 SiC 2 corrosion inhibition when this material immersed into high temperature liquid lead coolant. The diffusion coefficient of Ti 3 SiC 2 was determined from mean-square-displacement simulation data. The structures of Ti 3 SiC 2 during corrosion inhibition using oxygen agent were observed by Ovito vizualisation code. The simulations have been done using the Moldy molecular dynamics code. Initial material structure as input of simulation generated by Atomsk, Packmol and VESTA codes based on “file 1520829.cif” format file that taken from the crystallography open database (CoD) website. It is from our work we can show that injecting oxygen with concentration about 0.15 – 0.19 wt%, it seems can stabilize the structure of Ti 2 SiC 3 maximally.
Publisher: IOP Publishing
Date: 06-2018
Publisher: Institut Agama Islam Negeri Madura
Date: 31-12-2018
DOI: 10.19105/AL-LHKAM.V13I2.1875
Abstract: The spreading Islamic content through Whatsapp as one of popular social media platforms which no longer reflects moderate (wasatiyyah) Islamic teaching has began to appear. It ranges from the content of Islamic teaching, the pattern of movement, response on contemporary life, to discussion on political system and discourses on nation-state. In responding to the Islamic contents implying radicalism, terrorism and ambition to change the form of state from republic into khilafah based system, most of Maduresse urban people reject it. However, they still rely on the content spreaded through social media in understanding Islam. This dynamics could possibly influence people and lead them to either right or left extreme points out of the frame of moderate Islam taught by Rasulullah pbuh and classically recognized scholars (ulama’ salaf al-salih). Therefore, it is urgent to formulate a preaching strategy with the good content to provide people access on balanced information so they could be selective in understanding Islamic teaching. (Penyebaran konten keislaman melalui media sosial (WhatsApp) yang tidak lagi mencerminkan wasathiyyat al-Islm (moderasi ajaran Islam) mulai bermunculan baik materi keislaman, pola gerakan, penyikapan terhadap kondisi kekinian, bahkan perbincangan system politik dan kehidupan bernegara. Dalam menyikapi konten keislaman yang mengarah pada paham radikalisme, terorisme, dan gagasan mengubah system bernegara NKRI dengan konsep khilafah, mayoritas masyarakat perkotaan di Madura menolaknya. Namun demikian terhadap konten materi keislaman yang disebarkan melalui media sosial, sejumlah kalangan sudah menjadikannya sebagai pijakan dalam memahami Islam. Dinamika ini dapat mempengaruhi masyarakat pada sikap ektrem kanan atau ekstrem kiri, yang keluar dari bingkai Islm wasathiyyat sebagaimana yang diajarkan oleh Rasulullah Saw. dan Para Ulama Salafus Shlih. Oleh karena itu perlu strategi dakwah dengan materi yang tepat agar masyarakat mendapatkan informasi yang berimbang sehingga bisa selektif dalam memahami ajaran Islam)
Publisher: Oxford University Press (OUP)
Date: 22-08-2011
DOI: 10.1093/JXB/ERQ257
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/FP03202
Abstract: In search of rapid screening tools for magnesium (Mg) deficiency in crops at early stages of plant ontogeny, we studied the kinetics of leaf photosynthetic responses and changes in electrophysiological characteristics of broad bean leaves as affected by different levels of Mg in the nutrient solution (1–200 ppm). No apparent correlation between plant age, Mg supply level, leaf stomatal conductance (gs) and transpiration rate (E) were found. A significant difference in CO2 assimilation became obvious only at week 8. Chlorophyll fluorescence analysis, however, revealed a significant difference in the maximal quantum efficiency of PSII (Fv / Fm ratio) between Mg-deficient and Mg-sufficient plants as early as 2 weeks after seedling emergence. The most sensitive measurements were of light-induced changes in the leaf surface electric potential, with an almost 2-fold difference in the magnitude of leaf bioelectric response between 10 ppm (deficient) and 50 ppm (optimal) treatments. Preliminary experiments in which net Mg2+ fluxes were measured using the non-invasive ion flux estimation (MIFE) technique showed that the electrical changes on the leaf surface might, to some extent, reflect the movement of Mg2+ across the plasma membrane.
Publisher: Wiley
Date: 09-09-2013
DOI: 10.1111/PCE.12180
Abstract: Salt sensitive (pea) and salt tolerant (barley) species were used to understand the physiological basis of differential salinity tolerance in crops. Pea plants were much more efficient in restoring otherwise depolarized membrane potential thereby effectively decreasing K(+) efflux through depolarization-activated outward rectifying potassium channels. At the same time, pea root apex was 10-fold more sensitive to physiologically relevant H2 O2 concentration and accumulated larger amounts of H2 O2 under saline conditions. This resulted in a rapid loss of cell viability in the pea root apex. Barley plants rapidly loaded Na(+) into the xylem this increase was only transient, and xylem and leaf Na(+) concentration remained at a steady level for weeks. On the contrary, pea plants restricted xylem Na(+) loading during the first few days of treatment but failed to prevent shoot Na(+) elevation in the long term. It is concluded that superior salinity tolerance of barley plants compared with pea is conferred by at least three different mechanisms: (1) efficient control of xylem Na(+) loading (2) efficient control of H2 O2 accumulation and reduced sensitivity of non-selective cation channels to H2 O2 in the root apex and (3) higher energy saving efficiency, with less ATP spent to maintain membrane potential under saline conditions.
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/FP03201
Abstract: We used broad beans (Vicia faba L.) as a case study to characterise the development of magnesium (Mg) deficiency symptoms in plants and make a comparative evaluation of the suitability of various physiological characteristics as prospective tools for early diagnosis of Mg deficiency. Growth characteristics were measured at monthly intervals from plants grown in soil solution with a wide range of Mg concentrations (from 1 to 200 ppm). The data were then correlated with plant yield responses, pigment composition and nutrient content in leaves, as well as with visual deficiency symptoms. At the age of 4 weeks, no visual symptoms of deficiency were evident even for plants grown at 1 ppm (severe Mg deficiency). Shoot growth characteristics were very similar for a wide range of treatments, although a pronounced difference in plant yield was observed at the end of the experiment. It appears that neither plant biomass nor leaf area are good indicators for use as diagnostic tools for detection of Mg deficiency in broad beans. Although pigment analysis revealed some difference between treatments, at no age was it possible to distinguish between moderately Mg-deficient (10 or 20 ppm) and sufficient (50–80 ppm) treatments. Leaf elemental analysis for Mg content remained the most sensitive and accurate indicator of Mg deficiency in broad beans. However, it is unsuitable for screening purposes as it is both costly and time-consuming. There is a need for less expensive but effective, rapid screening tools of Mg deficiency in crops at early stages of plant ontogeny.
Publisher: Elsevier BV
Date: 07-2013
DOI: 10.1016/J.JPLPH.2013.01.014
Abstract: Quinoa is regarded as a highly salt tolerant halophyte crop, of great potential for cultivation on saline areas around the world. Fourteen quinoa genotypes of different geographical origin, differing in salinity tolerance, were grown under greenhouse conditions. Salinity treatment started on 10 day old seedlings. Six weeks after the treatment commenced, leaf sap Na and K content and osmolality, stomatal density, chlorophyll fluorescence characteristics, and xylem sap Na and K composition were measured. Responses to salinity differed greatly among the varieties. All cultivars had substantially increased K(+) concentrations in the leaf sap, but the most tolerant cultivars had lower xylem Na(+) content at the time of s ling. Most tolerant cultivars had lowest leaf sap osmolality. All varieties reduced stomata density when grown under saline conditions. All varieties clustered into two groups (includers and excluders) depending on their strategy of handling Na(+) under saline conditions. Under control (non-saline) conditions, a strong positive correlation was observed between salinity tolerance and plants ability to accumulate Na(+) in the shoot. Increased leaf sap K(+), controlled Na(+) loading to the xylem, and reduced stomata density are important physiological traits contributing to genotypic differences in salinity tolerance in quinoa, a halophyte species from Chenopodium family.
Publisher: IOP Publishing
Date: 06-2018
Publisher: IOP Publishing
Date: 03-2019
Publisher: Springer Science and Business Media LLC
Date: 12-01-2005
DOI: 10.1007/S00425-004-1425-0
Abstract: Considering the physiological significance of Mg homeostasis in plants, surprisingly little is known about the molecular and ionic mechanisms mediating Mg transport across the plasma membrane and the impact of Mg availability on transport processes at the plasmalemma. In this study, a non-invasive ion-selective microelectrode technique (MIFE) was used to characterize the effects of Mg availability on the activity of plasma membrane H+, K+, Ca2+, and Mg2+ transporters in the mesophyll cells of broad bean (Vicia faba L.) plants. Based on the stoichiometry of ion-flux changes and results of pharmacological experiments, we suggest that at least two mechanisms are involved in Mg2+ uptake across the plasma membrane of bean mesophyll cells. One of them is a non-selective cation channel, also permeable to K+ and Ca2+. The other mechanism, operating at concentrations below 30 microM, was speculated to be an H+/Mg+ exchanger. Experiments performed on leaves grown at different levels of Mg availability (from deficient to excessive) showed that Mg availability has a significant impact on the activity of plasma-membrane transporters for Ca2+, K+, and H+. We discuss the physiological significance of Mg-induced changes in leaf electrophysiological responses to light and the ionic mechanisms underlying this process.
Publisher: SustaiN Society
Date: 07-12-2017
Publisher: IOP Publishing
Date: 04-2018
No related grants have been discovered for yuda hariadi.