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First semi-synthetic organism with 'alien' DNA created
Biochemistry, Genetics, and Molecular Biology Researchers from the Scripps Research Institute in La Jolla, Calif., created a semi-synthetic microbe, a genetically modified E. coli bacterium. They created two new nucleotides, X and Y, and fused them into t ...
Brain size does matter when it comes to self-control among animals
Psychology and Neuroscience In a large-scale collaborative effort, scientists used two problem-solving tasks to investigate the evolution of self-control among animals. The study involved 36 species of mammals and birds. The scientists found that the spec ...
Heart disease can be prevented by altering fat metabolism
Medicine, Health, and Nursing In a recent study, scientists were able to identify and arrest the action of a single molecular agent that affects the body’s ability to properly use, transport, and rid itself of cholesterol. This agent, called glycosphingol ...
Researchers discover the earliest ancestor of land herbivores
Plant and Animal Science The discovery of a fossilized juvenile skeleton of Eocasea martini has helped researchers understand how carnivores transitioned into herbivores for the first time on land. The 300-million-year old skeleton is less than 20 cm long ...
Three-million-year-old landscape beneath Greenland Ice Sheet
Earth and Planetary Science Scientists have discovered an ancient tundra landscape under the Greenland Ice Sheet, preserved for 2.7 million years. This discovery provides strong evidence that the Greenland Ice Sheet has persisted much longer than previous ...
Artificial ‘biospleen’ device to treat sepsis
Biochemistry, Genetics, and Molecular Biology Researchers at Wyss Institute for Biologically Inspired Engineering in Boston, Massachusetts, have developed a device that acts like the spleen to rid the body of infection and toxins. The artificial ‘biosplee ...
Induced pluripotent stem cell treatment set for its first human trial
Biochemistry, Genetics, and Molecular Biology Masayo Takahashi, an ophthalmologist at the RIKEN Center for Developmental Biology (CDB) in Kobe, is set to treat a human patient with induced pluripotent stem (iPS) cells. iPS cells, unlike embryonic stem cel ...
Scientists discover new genus of sea creatures—Dendrogramma
Plant and Animal Science A zoologist at the Natural History Museum of Denmark in Copenhagen, Jean Just, discovered sea creatures in the Tasman Sea that cannot be classified into any known major phyla. These invertebrate creatures—now classified as Dendrog ...
Quantum imaging produces pictures of invisible objects
Physics Anton Zeilinger, a physicist at the Austrian Academy of Sciences in Vienna, has developed a method of taking pictures using light that has not interacted with the object being photographed. Conventionally, an object is seen because it reflects lig ...
임팩트 팩터(Impact factor)에 대한 논란들
English 임팩트 팩터(Impact Factor)는 출판과 과학 분야에서 가장 널리 회자되는 주제 중 하나입니다. 톰슨 로이터(Thomson Reuter)에서는 저널에 대해 매년 임팩트 팩터 (IF)를 매기는데, 이는 지난 2년간 해당 저널에 실린 논문들이 올 한 해 인용된 횟수의 평균값입니다. 지난 달에 톰슨 로이터는 2013년의 저널 임팩트 팩터를 담은Journal Citation Reports(JCR)을 발표했습니다. 톰슨 로이터 에 따르면, ...
