다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Satoshi Umemura ● Hisatomi Arima ● Shuji Arima ● Kei Asayama ● Yasuaki Dohi ● Yoshitaka Hirooka ● Takeshi Horio ● Satoshi Hoshide ● Shunya Ikeda ● Toshihiko Ishimitsu ● Masaaki Ito ● Sadayoshi Ito ● Yoshio Iwashima ● Hisashi Kai ● Kei Kamide ● Yoshihiko Kanno ● Naoki Kashihara ● Yuhei Kawano ● Toru Kikuchi ● Kazuo Kitamura ● Takanari Kitazono ● Katsuhiko Kohara ● Masataka Kudo ● Hiroo Kumagai ● Kiyoshi Matsumura ● Hideo Matsuura ● Katsuyuki Miura ● Masashi Mukoyama ● Satoko Nakamura ● Takayoshi Ohkubo ● Yusuke Ohya ● Takafumi Okura ● Hiromi Rakugi ● Shigeyuki Saitoh ● Hirotaka Shibata ● Tatsuo Shimosawa ● Hiromichi Suzuki ● Shori Takahashi ● Kouichi Tamura ● Hirofumi Tomiyama ● Takuya Tsuchihashi ● Shinichiro Ueda ● Yoshinari Uehara ● Hidenori Urata ● Nobuhito Hirawa

The Japanese Society of Hypertension Guidelines for the Management of Hypertension (JSH 2019)

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The Nature Of The Chemical Bond

One of the long-standing challenges in experimental physics is the observation of room-temperature superconductivity1,2. Recently, high-temperature conventional superconductivity in hydrogen-rich materials has been reported in several systems under high pressure3–5. An  important discovery leading to room-temperature superconductivity is the pressure-driven disproportionation of hydrogen sulfide (H2S) to H3S, with a confirmed transition temperature of 203 kelvin at 155 gigapascals3,6. Both H2S and CH4 readily mix with hydrogen to form guest–host structures at lower pressures7, and are of  comparable size at 4 gigapascals. By introducing methane at low pressures into the H2S + H2 precursor mixture for H3S, molecular exchange is allowed within a large assemblage of van der Waals solids that are hydrogen-rich with H2 inclusions; these guest–host structures become the building blocks of superconducting compounds at extreme conditions. Here we report superconductivity in a photochemically transformed carbonaceous sulfur hydride system, starting from elemental precursors, with a maximum superconducting transition temperature of 287.7 ± 1.2 kelvin (about 15 degrees Celsius) achieved at 267 ± 10 gigapascals. The superconducting state is observed over a broad pressure range in the diamond anvil cell, from 140 to 275 gigapascals, with a sharp upturn in transition temperature above 220 gigapascals. Superconductivity is established by the observation of zero resistance, a magnetic susceptibility of up to 190 gigapascals, and reduction of the transition temperature under an external magnetic field of up to 9 tesla, with an upper critical magnetic field of about 62 tesla according to the Ginzburg–Landau model at zero temperature. The light, quantum nature of hydrogen limits the structural and stoichiometric determination of the system by X-ray scattering techniques, but Raman spectroscopy is used to probe the chemical and structural transformations before metallization. The introduction of chemical tuning within our ternary system could enable the preservation of the properties of room-temperature superconductivity at lower pressures. Room-temperature superconductivity is observed in a photochemically synthesized ternary carbonaceous sulfur hydride system at 15 °C and 267 GPa.

Room-temperature superconductivity in a carbonaceous sulfur hydride

Advanced Organic Chemistry: Reactions, Mechanisms And Structure

Social media renders real-time updates, which are, in many cases, much faster than the traditional media. Due to this reason, social media is rapidly becoming an essential aspect of emergency response and recovery. This paper proposes a collaborative approach for a more coordinated emergency response system during a fire incident from Twitter. The method is implemented in a visual tool, called Firebird. Firebird attempts to source first-hand situational information from Twitter feeds. Using a combination of NLP and deep learning techniques, Firebird offers real-time fire detection, fact-checking, and incident location sharing with the firefighters to speed up the response efforts at a scale close to real-time.

FireBird: A Fire Alert and Live Fire Monitoring System Based on Social Media Contribution

Regular supply of maintenance fund for water infrastructures in costal Bangladesh is a necessary condition for the existence of river embankments. This article reviews a number of efforts to identify rules and conditions helping the regular supply of maintenance fund. A number of studies have used experimental games to replicate a real-life situation. The experimental results show that participants from Local Government Engineering Department polders significantly contribute more than players from Bangladesh Water Development Board polders which indicate importance of institutional environment. Also, our study finds significant importance of economic homogeneity in the group as well as proportional sharing of benefits increases the level of contribution.JEL: C93, Z13, D74

Where River Meets the Sea: Participatory Water Management in Coastal Bangladesh

In this approach, formulae based mnemonics by counting lone pair of electrons (localized or delocalized) have been highlighted by innovative and time economic way to enhance interest of students’ who belong to paranoia zone of chemistry for the prediction of aromatic behavior and hybridization state of heterocyclic compounds. In order to ameliorate the field of chemical education, I have taken an enterprise to hub two economic mnemonics including two different formulae. This article encourages students to solve multiple choice type questions (MCQs) at different competitive examinations for a time being in an economic ground for the prediction of aromaticity and hybridization state of heterocyclic compounds containing two or more hetero-atoms. Educators can use these mnemonics in their teaching style in the classroom lectures after discussing conventional methods to make chemistry intriguing because the use of mnemonics in classroom lectures is an essential tool to become a distinguished educator.

/pdf/lone-pair-of-electrons-discriminate-hybridization-with-4jtmotgdx0.pdf

Lone Pair of Electrons Discriminate Hybridization with Aromaticity in the Heterocyclic Compounds - Innovative Mnemonics

There are various databases to retrieve information; sometimes users find it difficult to select the material to be read To make the right decision for selecting the appropriate database there are some important factors such as coverage, functionality etc This paper compares two popular bibliographic databases - Web of Science and Scopus for their coverage and retrieval of Climate related literature Four keywords were used to carry out the searches and the paper examines the weakness and strength of these two databases

A Comparative Study of Scopus and Web of Science: Climate Related Literature Retrieval

In this review article, formulae based on innovative mnemonics have been discussed to create interest and remove phobia of students in the field of chemical education. Educators can use these numerous mnemonics in their teaching style in the classroom lectures after discussing conventional methods to make chemistry intriguing. Here, I have tried to focus some time economic mnemonics by including thirty-three (33) new formulae in the field of chemical education. It will encourage students to solve multiple choice type questions (MCQs) at different competitive examinations in a time economic ground. This review article emphasizes chemical education in the light of a variety of mnemonic techniques to make it metabolic, time economic and intriguing for students because the use of mnemonics in classroom lectures is an essential tool to become a distinguished educator.

/pdf/innovative-mnemonics-make-chemical-education-time-economic-a-1ea3kwl6wg.pdf

Arijit Das

Papers

FireBird: A Fire Alert and Live Fire Monitoring System Based on Social Media Contribution

Where River Meets the Sea: Participatory Water Management in Coastal Bangladesh

Lone Pair of Electrons Discriminate Hybridization with Aromaticity in the Heterocyclic Compounds - Innovative Mnemonics

A Comparative Study of Scopus and Web of Science: Climate Related Literature Retrieval

Innovative Mnemonics Make Chemical Education Time Economic – A Pedagogical Review Article