2,982 research outputs found
Colección: Perfil #3
No full textThis board-book version of LM turns out to be quite creative. Ratoncete comes from school every afternoon and goes through the forest looking for adventures. He apparently blasts a horn into the ear of the sleeping lion. Don Leon wants to spank him as a result, but Ratoncete offers an apology, not an offer of help. Later, he happens upon the lion in his trap of ropes. 8 pages, counting both covers. 6½" x 9".Language note: SpanishNo Autho
Characterization of F-actin depolymerization as a major toxic event induced by pectenotoxin-6 in neuroblastoma cells
No full textPectenotoxins are a group of marine toxins produced by dinoflagellates and formerly included within the group of diarrhetic shellfish poison or toxins (DSP or DST) because of their physico-chemical properties. However, toxicological data on pectenotoxins are still very scarce and its mechanism of action is largely unknown, but toxicity in laboratory animals has been demonstrated by intraperitoneal injection. In this report, we present results of in vitro toxicological assessment of pectenotoxin-6, a derivative of the parental toxin pectenotoxin-2 first isolated from toxic scallops. Results obtained demonstrate an specific time- and dose-dependent depolymerization of F-actin in neuroblastoma cells exposed to pectenotoxin-6 (half-maximal effect about 700 nM at 24 hr). The change in the state of polymerization of actin was not accompanied by other major effects on specific signal transduction pathways or cell survival rate. Pectenotoxin-6 does not modify cytosolic calcium levels either in a calcium containing or calcium-free medium in human lymphocytes. Only when capacitative calcium influx was first activated, the toxin addition significantly decreased the following calcium influx. In these cells, pectenotoxin-6 only modifies cAMP (adenosine 3',5'-cyclic monophosphate) levels in calcium-free conditions. In addition, no effect on cell attachment or apoptosis induction was observed at micromolar concentrations of pectenotoxin-6. Therefore, we conclude that cytoskeletal disruption is a key mechanism of PTX6-induced toxicity in eukaryotic cells. (C) 2002 Elsevier Science Inc. All rights reserved
Markets Equilibrium: The Is-Lm Model
No full text. The purpose of this study is to analyze how the concept of markets equilibrium: the IS-LM Model. This research uses library research method by using reference sources from books and journals according to the theme. The author uses a qualitative method which is explained graphically, namely the market balance of the IS-LM model where the focus is on money and goods markets associated with macroeconomics where researchers take the side of investors. The results of this study are that the balance in the economy is the point where the IS and LM curves intersect. This point provides an interest rate (r) and income level (Y) that satisfies the equilibrium conditions that occur in the goods market and money market. In other words, planned spending equals actual spending, and the demand for real money balances equals the supply. So that the IS-LM balance, it is stated that IS=LM
<Articles>A Dynamical IS-LM Model
No full text[抄録]IS-LM モデルは、ヒックスによるケインズ経済学の因果関係を重視しながら要約したモデルと解釈することができる。IS-LM モデルの安定性分析はすでに研究成果があるが、1S-LM モデルの動学化はほとんど研究成果がない。本稿は IS-LM モデルの動学化を試みる。まず投資関数に資本ストックを取り入れ、資本蓄積と経済の変動を考える。次にカルドアモデルを考慮し、投資の予想収益率表の変化を仮定し、経済に循環が発生することを考察する。
[Abstract]In this paper, The author tries to build a Dynamical IS-LM Model. The lnvestment depends on two factors, one is the rate of interest, and the other is the rate of prosperity yield of the investment. I will focus on the second factor. As was shown by Kaldor, the rate of prosperity yield has nonlinear fluctuations. By means of this character, This study proposes an IS-LM model that generates a cycle.departmental bulletin pape
Potential effects of climate change on cyanobacterial toxin production
No full textThe increasingly widespread production of toxins by marine and freshwater microalgae raises serious concerns regarding seafood and drinking water safety.
This book compiles studies on the influence of climate change on the spreading of toxin-producing species in aquatic systems. The chemistry and biology of toxin production is revised and an outlook on control and prevention of the toxins' impact on human and animal health is given.
Unique compilation on the impact of climate change on marine and freshwater toxins.
Explores the implications for drinking water, (sea)food and feed safety.
New in the 2nd Edition: additional chapters on cyanobacteria and dinoflagellates
Alexandrium spp.: genetic and ecological factors influencing saxitoxin production and proliferation
No full text
Possibilities and testing of CPRNG in block cipher mode of operation PM-DC-LM
No full textThis paper discusses the chaotic pseudo-random number generator (CPRNG), which is used in block cipher mode of operation called PM-DC-LM. PM-DC-LM is one of possible subversions of general PM mode. In this paper is not discussed the design of PM-DC-LM, but only CPRNG as a part of it because designing is written in other papers. Possibilities, how to change or to improve CPRNG are mentioned. The final part is devoted for a little testing of CPRNG and some testing data are shown. © 2016 Author(s)
CF/LM-PAEK: Characterisation and sensitivity to critical process parameters for automated fibre placement
No full textThis paper presents an investigation into Automated Fibre Placement process parameters for a novel carbon-fibre-reinforced thermoplastic material based on a low-melt polyaryl ether ketone polymer matrix (CF/LM-PAEK). The primary focus of this investigation is in-situ consolidation, with parameter sets for sample manufacturing selected based on a Design of Experiment method and analysed by means of mechanical and thermal testing. For in-situ consolidation, a maximum shear strength of 33.6 MPa and a crystallinity of 27.3% is achieved. Subsequent tempering increases shear strength up to 46.5 MPa and crystallinity up to 32%. The material was found to be insensitive to layup speed within the tested parameter range (1–15 m/min), achieving similar results for high layup speeds
Perancangan Adaptor Dengan Output 5V DC Menggunakan IC LM 7805
No full textABSTRAK
Fahrul Kurniawan, Perancangan Adaptor Dengan Output 5V DC Menggunakan IC LM 7805, Komprehensif, Jakarta, Pendidikan Teknik Elektronika, Fakultas Teknik, Universitas Negeri Jakarta
Tenaga listrik merupakan tenaga yang dimanfaatkan manusia dalam kehidupannya sehari-hari. Tenaga listrik dimanfaatkan untuk menghidupkan atau menjalankan alat-alat elektronika yang mempermudah aktivitas manusia. Agar dapat menggunakan tenaga listrik pada alat-alat elektronik diperlukan pengubah daya dari arus listrik arus kuat ke arus listrik arus lemah. Konsep pengubahan arus kuat menjadi arus lemah diterapkan dalam bentuk adaptor. Dalam pembelajarannya adaptor memanfaatkan konsep dioda sebagai penyearah arus listrik. Pada program studi Pendidikan Teknik Elektronika, khususnya di Universitas Negeri Jakarta, penerapan konsep dioda sebagai penyearah dituangkan dalam pembuatan adaptor DC oleh mahasiswa. Menggunakan IC LM 7805, penulis membuat adaptor DC dengan keluaran 5V sebagai penerapan konsep dioda sebagai penyarah. Hasil dari perancangan adaptor menunjukkan hasil pengukuran output adaptor bernilai 5V. Hal ini berbanding lurus dengan sifat IC LM 7805 yang meregulasi tegangan output yang masuk ke IC menjadi 5V.
Kata Kunci: Adaptor, Dioda, Penyearah, IC LM 7805
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ABSTRACT
Fahrul Kurniawan, Adapter Design with 5V DC Output Using IC LM 7805, Comprehensive, Jakarta, Electrical Engineering Technical Education, Technic Faculty, University State of Jakarta
Electrical power is energy that humans use in their daily lives. Electrical power is used to turn on or run electronic devices that make human activities easier. In order to use electrical power in electronic devices, it is necessary to convert the power from strong current to weak current. The concept of converting strong current to weak current is implemented in the form of an adapter. In the lesson, the adapter utilizes the concept of a diode as an electric current rectifier. In the Electronics Engineering Education study program, especially at Jakarta State University, the application of the concept of diodes as rectifiers is outlined in the manufacture of DC adapters by students. Using IC LM 7805, the author made a DC adapter with 5V output as an application of the diode concept as a rectifier. The results of the adapter design show that the adapter output measurement results are 5V. This is directly proportional to the nature of the LM 7805 IC which regulates the output voltage entering the IC to 5V.
Keywords: Adapter, Diode, Rectifier, IC LM 780
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