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In this paper, the name, origin and producing area of Sojae Semen Nigrum were studied to provide the basis for the selection of medicinal varieties of Sojae Semen Nigrum. The textual research of this herbal was carried out through the textual research of ancient and modern literature and the comparative study of botany, combined with agricultural archaeology and the investigation of adulterant products. Before Qin Dynasty, the Sojae Semen Nigrums had not been selected, and the edible beans should only be Glycine soja. From Qin to the Northern and Southern dynasties, the Sojae Semen Nigrums G. max were selected,but the medicinal Sojae Semen Nigrum was G. soja. After Tang Dynasty, Sojae Semen Nigrums were recorded more, the medicinal Sojae Semen Nigrums referred to G. soja,G. max and G. gracilis. In modern times, G. soja was hardly to use as the medicine. The harvest time is August or September, and there are many processing methods, such as frying, making tofu, making Semen Sojae Praeparatum, boiling, boiling with auxiliary materials, germination, etc. The quality evaluation of Sojae Semen Nigrum was consistent in past dynasties, and it was considered thatquot;it is better for those who are tight and smallquot;. Before Tang Dynasty, the better should only be G. soja. After the Qing Dynasty, the better should be green cotyledon varieties of G. max,which are recommended. In addition, there are many varieties of Sojae Semen Nigrum. It is hoped that that the scientific researchers of traditional Chinese medicine can use modern technology to distinguish the efficacy of Sojae Semen Nigrum with green and yellow cotyledon, and make a comparison between large and small Sojae Semen Nigrum. The results provide scientific basis for the selection of medicinal varieties of Sojae Semen Nigrum.

In this paper, we consider a system of (2+1)-dimensional nonlinear models by using CK direct method and Hereman—Nuseir method generated by the Jaulent—Miodek Hierarchy. We construct some new multiple kink and singular kink solutions of (2+1)-Dimensional Nonlinear Models with the aid of symbolic computation.

Heat map of imported dengue cases by city and week in Guangdong Province in 2014. A indicates the Pearl River Delta Region; B labels the non-Pearl River Delta Region. The number of weekly cases was standardized by the number of total cases. (PDF 9 kb)

Multilingual abstracts in the five official working languages of the United Nations. (PDF 299 kb)

Heat map of imported dengue cases by city and week in Guangdong Province in 2014. A indicates the Pearl River Delta Region; B labels the non-Pearl River Delta Region. The number of weekly cases was standardized by the number of total cases. (PDF 9 kb)

A modified direct method is developed to find finite symmetry groups of nonlinear mathematical physics systems. Applying the modified direct method to the well-known (2+1)-dimensional BKP equation we get its symmetry. Furthermore, the exact solutions of (2+1)-dimensional BKP equation are obtained through symmetry analysis.

With the help of the homogeneous balance method, the Jacobi elliptic expansion method and the auxiliary equation method, the first elliptic function equation is used to obtain the Jacobi doubly periodic wave solutions of the (2+1)-dimensional B-type Kadomtsev–Petviashvili (BKP) equation and the generalized Klein–Gordon equation. The method is also valid for other (1+1)-dimensional and higher dimensional systems.