source: Chiba UniversityHydrocarbazole is a crucial compound in organic chemistry, serving as a building block for various biologically active compounds, including pesticides such as strychnine and anticancer drugs such as vinblastine and minovincine. Consequently, the development of synthesis methods for these compounds is a crucial research topic.Diels-Alder reaction is one of the most reliable methods for this purpose. For the last decade, a research team from Japan, led by Associate Professor Shinji Harada from the Institute for Advanced Academic Research and the Graduate School of Pharmac...
Release time:
2024
-
06
-
25
viewed：0
source：PHYSIn recent years, the high complexity of integrated devices has made heat accumulation increasingly critical and has resulted in higher heat dissipation requirements for substrates and packaging materials. In this study, boron nitride microribbon (BNMR)/Al2O3 composite ceramics are prepared using spark plasma sintering (SPS).This study examines the effect of varying the amount of toughened phase BNMR on the density, mechanical properties, dielectric constant, and thermal conductivity of BNMR/Al2O3 composite ceramics while also exploring the mechanisms behind the toughening and increa...
Release time:
2024
-
06
-
21
viewed：0
source: University of TokyoTitanium is the ninth most abundant element in the Earth's crust, yet products based on pure titanium are uncommon because it's expensive to remove the oxygen from titanium ore. Reducing costs would encourage manufacturers to take advantage of the highly useful properties of titanium in their products.Now, in a study published in Nature Communications, researchers from the Institute of Industrial Science, The University of Tokyo, have developed a procedure that reduces the cost of producing titanium that's almost entirely free of oxygen. This oxygen remov...
Release time:
2024
-
06
-
21
viewed：0
source:Skolkovo Institute of Science and TechnologyResearchers from Skoltech, Jilin University and Beijing HPSTAR in China, and their German colleagues have synthesized and studied a new type of hydrogen-rich superconductor. Technically referred to as an A15-type lanthanum superhydride, with the formula La4H23, it shows superconductivity below minus 168 degrees Celsius at a pressure of 1.2 million atmospheres. The research results were published in the National Science Review.Polyhydrides are a novel class of compounds synthesized at about 1 million times the normal atmospheric pressure on Ear...
Release time:
2024
-
06
-
19
viewed：0