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RumexL., a genus in Polygonaceae family with about 200 species, is growing widely around the world. Some Rumexspecies, called "sorrel" or "dock", have been used as food application and treatment of skin diseases and hemostasis after trauma by the local people of its growing areas for centuries. To date, 29 Rumexspecies have been studied to contain about 268 substances, including anthraquinones, flavonoids, naphthalenes, stilbenes, diterpene alkaloids, terpenes, lignans, and tannins. Crude extract of Rumexspp. and the pure isolates displayed various bioactivities, such as antibacterial, anti-inflammatory, antitumor, antioxidant, cardiovascular protection and antiaging activities. Rumexspecies have important potential to become a clinical medicinal source in future. This review covers research articles from 1900 to 2022, fetched from SciFinder, Web of Science, ResearchGate, CNKI and Google Scholar, using “Rumex” as a search term ("all fields") with no specific time frame set for the search. Thirty-five Rumexspecies were selected and summarized on their geographical distribution, edible parts, traditional uses, chemical research and pharmacological properties.

The works are focused on finding out proper shape of reversed domains to obtain effective harmonic generations with high conversion efficiency. The conversion efficiency of second harmonic wave in two-dimensional nonlinear photonic crystals consisting of square lattice and reversed domains of various shapes are studied numerically. The shapes of reversed domains are extended from circle, square to ellipse and rectangle. The conversion efficiency of different order quasi-phase matched process can be maximized by adjusting the orientation of noncircular reversed domains. Moreover, a cross-shaped reversed domain is utilized to improve the conversion efficiency of two-order non-collinear quasiphase matching.

The major protein fractions of peach kernel was extracted and isolated by Osborne’s method. The proteins were then characterised by gel electrophoresis, differential scanning calorimetry (DSC) and scanning electron microscopy(SEM) in order to elucidate its nature and structural properties. It was shown that albumins (85 g/100 g) and globulins(9 g/100 g) were the main components of the protein extract. Glutelins and prolamins are minor components (＜2 g/100 g). Sodium dodecylsul- phate polyacrylamide gel electrophoresis (SDS- PAGE) revealed a number of proteins with molecular masses ranging from approximately 20 to 63 kDa for peach kernel proteins; All the curves of DSC had two distinct endothermic peaks; One of The denaturation temperature (Td1) for various peach kernel proteins was less than 60℃, and the other (Td2) was more than 90℃. SEM showed that various proteins had some difference in microstructure .