Stray animals with incorrect microchip details are less likely to be reclaimed, and unclaimed strays are at increased risk of euthanasia. A retrospective cohort study was performed using 394,747 cats and 904,909 dogs registered with Australia's largest microchip database to describe animal characteristics, determine whether annual email reminders increased the frequency that owners updated thei...

Knowledge Acquisition is a critical and time-consuming phase during the development of knowledge based systems. The ACKnowledge project' aims at improving the efficiency of knowledge acquisition. For this purpose, the theoretical approach of the project consists in analyzing and evaluating applicability of existing knowledge acquisition techniques in various contexts in order to develop a compr...

The Australian species Nicotiana walpa is newly described here from plants collected at the Uluru-Kata Tjuta National Park in Northern Territory, Australia, and illustrated cultivated Royal Botanic Gardens, Kew. Its discovery, ecology, cytology cultivation are discussed.

Soon Kyu Lee, Joo Yeon Jhun, Mi-La Cho, Ho Joong Choi, Young Kyoung You, Pil Soo Sung, Jeong Won Jang, Seung Kew Yoon, Jong Choi. Korean J Transplant 2022;36:133. https://doi.org/10.4285/ATW2022.F-2532

The bull is a graph consisting of a triangle and two pendant edges. A graphs is called bull-free if no induced subgraph of it is a bull. In this paper we prove that every bull-free graph on n vertices contains either a clique or a stable set of size n 1 4 , thus settling the Erdős-Hajnal conjecture [5] for the bull.

The DNA of most vertebrate sperm cells is packaged by protamines. The primary structure of mammalian protamine I can be divided into three domains, a central DNA binding domain that is arginine-rich and amino- and carboxyl-terminal domains that are rich in cysteine residues. In native bull sperm chromatin, intramolecular disulfide bonds hold the terminal domains of bull protamine folded back on...

Delphinium caucasicum C.A. Mey. is illustrated from plants cultivated at the Royal Botanic Gardens, Kew. Its history, nomenclature and ecology are described instructions for its successful cultivation given.

Sperm acrosomes contain hyaluronidase, the amount varying, respectively, from ram, rabbit, bull, human, boar, rat, and stallion sperm to rooster sperm that do not possess this enzyme. Hyaluronidase was partially purified from bull sperm acrosomal extracts by DEAE-cellulose chromatography. Bull sperm acrosomal hyaluronidase has an optimum pH of 3.75 and is not effected by freezing and thawing or...