Isospin effects on the mass dependence of balance energy

We study the effect of isospin degree of freedom on balance energy throughout the mass range between 50 and 350 for two sets of isotopic systems with N/Z = 1.16 and 1.33 as well as isobaric systems with N/Z = 1.0 and 1.4. Our findings indicate that different values of balance energy for two isobaric systems may be mainly due to the Coulomb repulsion. We also demonstrate clearly the dominance of Coulomb repulsion over symmetry energy.Comment: 5 pages, 3 figures In this version the discussion is in terms of N/Z whereas in the journal the whole discussion is in terms of N/A. The conclusions remain unaffecte

Pirolisis Biomassa Pelepah Sawit Menjadi Bio - Oil dengan Katalis Natural Zeolit Dealuminated (NZA)

Petroleum as a primary energy source at this time, increasingly limited supply. Beside the population growth will lead to the increasing need for petroleum. To overcome these problems needed alternative energy sources that can be updated is one of the bio-oil. Bio-oil produced by pyrolysis process using biomass with warming, in the absence of oxygen. The purpose of this study was to determine the effect of variations in the catalyst on the yield of bio-oil produced, knowing the value of density, viscosity, acid number and flash point of bio-oil as well as knowing the chemical components of the bio-oil by GC-MS method. Pyrolysis uses palm frond as much as 50 grams along with 500 ml silinap with NZA catalysts variation of 0%, 1%, 2%, 3%, and 4% w / w with a stirring speed of 300 rpm and a temperature of 320 º C for 120 minutes. In this penelitiam largest yield obtained on the catalyst NZA 3% variation of 44.4%. Characteristics of physical properties obtained are: density of 0.996 g / ml, 11.733 cSt viscosity, acid number 79.34 g NaOH / g sample, as well as the flash point 58 º C. The results of GC-MS analysis, the dominant chemical components in bio-oil are acetic acid (40.90%); methanol (9.60%); methyl ester (2.30%); phenol (32.88%); 2-furancarboxaldehyde (8.98%)

Swipe Right into a Disciplinary Hearing: How The Use of Dating Apps Could Earn an Attorney More Than a Bad First Date

The Model Rules of Professional Conduct seek to police the conduct of attorneys. Each jurisdiction adopts its own rules of professional conduct to apply to the attorneys licensed within it. Notably, the model rules prohibit any sexual relationship between the attorney and client unless that relationship precedes the attorney-client relationship. Traditionally, defining a sexual relationship was simple, particularly if the attorney and client engaged in sexual intercourse. The introduction of dating apps, however, has blurred the line. This article outlines the inherent risks of attorneys using dating apps at a time when most newly-licensed attorneys make up the majority of dating app users by drawing similarities between real world sexual relationships and those that can be found alone. This article seeks to warn new attorneys of these risks, as well as offer a basic policy outline for law firms and other employers of attorneys to implement until the model rules can catch up to this new reality

Pirolisis Limbah Pelepah Sawit Menjadi Bio Oil Menggunakan Ni.Mo/Lempung Cengar

Fuel is a very important energy. The increase need fuel and diminishing avaibility of fossil fuel. It is also increasing awareness to find alternative energy technology. one of thesealternatives energy is bio-oil. bio-oil is a fuel, organic liquid produced by pyrolysis process. Pyrolysis of biomass a palm midrib. in a palm tree produces 40-50 midrib/tree/year so thatone hectare of palm can produce 6400 to 7500 midrib/year. manufacture of bio-oil with pyrolysis process can be done using Ni-Mo catalyst/Clay. This study aims to find the performance of the catalyst Ni-Mo/Clay Cengar (0%, 1%, 3% and 5% w / w biomass) against yeild bio-oil produced and characterize physical and chemical properties. pyrolysis palm midrib -40+60 mesh size of 50 grams, 0.5 grams of catalyst in 500 ml silinap performed at a temperature of 330 oC. The development Ni-Mo metal on clay cengar shown to affect the yield bio-oil is obtained, while the results obtained yield at 0%, 1%, 3% and 5%, respectively, 49.40%, 58.87%, 53.11% and 49.92%. bio-oil yield results that the maximum 58.87% obtained on treatment using a metal carrier Ni-Mo/clay cengar 1%. characterizationbiooil physical properties of of Ni-Mo/clay impurity 1% w/w has physical characteristics that density 0.9466 g/ml, 10.87 cSt viscosity, flash point 55C, and acid number 0.0751 g NaOH /g sample. based on the results of the analysis of the chemical components bio-oil is best obtained in the treatment bio-oil Ni-Mo/clay impurity 3% w/w bio-oil contains alcohol 7.35%, 0.35% phenol and other compounds 6.72% hydrocracking

Peningkatan Hasil Belajar Siswa Menggunakan Metode Drill pada Pembelajaran Matematika di Sekolah Dasar

The main objective of this research is to improve student learning outcomes through the drill method of learning mathematics in elementary school .This method used in this research is descriptive method, forms of action research and research settings in class V State Elementary School 15 Sungai Lipan,fifth grade teacher research subjects Public Elementary School 15 Sungai Lipan and fifth grade students of State Elementary School 15 Sungai Lipan amounted to 8 people, the data collection techniques used are direct observation and data collection tool that observasi.Tehnical sheet data analysis used is to calculate the average research implemented as much as 2 cycles, the results obtained in implementing the learning ability of teachers of mathematics through drill method, from the first cycle to the second cycle in sequence, namely 3.51 and 3.82. While the learning outcomes of students with an average of 62.5 and 95. There was an increase in both the ability of teachers in implementing the learning and on student learning outcomes

Konversi Termal Kayu Ketapang (Terminalia Catappal) Menjadi Bio-Oil dengan Teknologi Pirolisis Menggunakan Katalis NiMo/NZA

Availability of fossil fuels are depleting resulted in higher mining costs and selling prices to the public. In addition, the results of its combustion also releases GHG to the environment. One way to reduce the use of fossil fuels is produce bio-oil through pyrolysis technology. Ketapang rod is a huge potential used as feedstock for bio-oil production because its high cellulose content (41.80%). Synthesis of bio-oil from Ketapang stem begins with the process of size reduction of biomass and natural zeolite to -100+200 mesh size. Then, into the natural zeolite impregnated Ni and Mo to form the bimetallic catalyst NiMo/NZA. The catalyst is then activated through the stages of calcination, oxidation, and reduction. Pyrolysis process is done by varying the weight percentage of catalyst to biomass, ie: 1.5%, 2%, 2.5%, and 3% w/w. In addition, the catalytic pyrolysis process is carried 3% NZA only and 3% NiMo/NZA were activated by calcination process alone. The highest yield was obtained on the use of catalysts NiMo/NZA perfect activated which amounted to 91.05%. From physics analysis performed on the bio-oil obtained: density of 0.91 g/ml, viscosity 10.839 cSt, acid number 46.954 mg NaOH/g sample, flash point 52oC, and the heating value 42.66 MJ/Kg. The figures are included in the range of physical characteristics of diesel-oil. Five (5) the dominant compound results of chemical analysis by GC-MS of the bio-oil from Ketapang rod by using a catalyst NiMo/NZA 3% by weight are: 3,4,4-trimethyl-2-nonene (10.29%), isobutylene (8.84%), 2,2-dimethyl-butane (8.05%), 3,4,4-trimethyl-2-pentene (5.76%), and 2-methyl-1-heptene (5.26%)

A requirement for lipid rafts in B cell receptor induced Ca2+ flux

AbstractAlthough the major biochemical events triggered by ligation of the B-cell receptor (BCR) have been well defined [1,2], little is known about the spatio-temporal organization of BCR signaling components within the cell membrane and the mechanisms by which signaling specificity is achieved. Partitioning of signaling complexes into specialized domains in the plasma membrane may provide a mechanism for channeling specific stimuli into distinct signaling pathways. Here, we report that multiple tyrosine-phosphorylated proteins accumulate transiently upon BCR activation in detergent-insoluble membrane microdomains known as lipid rafts. We found an activation-dependent translocation to the rafts of the BCR itself, as well as phospholipase Cγ2 (PLCγ2), an enzyme critical for BCR-induced Ca2+ flux in B cells. An intact raft structure was required for BCR-induced tyrosine phosphorylation of PLCγ2 and the induction of Ca2+ flux. Taken together, these data provide a functional role for lipid rafts in BCR signaling