Organic Preparations and Procedures International《国际有机物制备与程序》（双月刊）. Organic Preparations and Procedures International (OPPI) publishes important, bimonthly research relevant to organic chemists engaged in synthesis. It is devoted to preparative organic chemistry, organometallic compounds, and procedures generally related to synthesis. The mission has always been to assist the practitioner by publishing reliable and reproducible procedures of the highest standards.

Organic Letters《有机快报》（一年48期）. Organic Letters is the leading journal in the field of organic chemistry, serving as an international forum for quickly publishing brief reports on cutting-edge research, creative approaches, and innovative ideas on a broad range of topics.

Organic Geochemistry《有机地球化学》（月刊）. Organic Geochemistry serves as the only dedicated medium for the publication of peer-reviewed research on all phases of geochemistry in which organic compounds play a major role. The Editors welcome contributions covering a wide spectrum of subjects in the geosciences broadly based on organic chemistry (including molecular and isotopic geochemistry), and involving geology, biogeochemistry, environmental geochemistry, chemical oceanography and hydrology.

Organic Electronics《有机电子》（月刊）. Organic Electronics is a journal whose primary interdisciplinary focus is on materials and phenomena related to organic and hybrid organic-inorganic devices such as light emitting diodes, thin film transistors, photovoltaic cells, sensors, memories, etc.

Organic & Biomolecular Chemistry《有机与生物分子化学》（一年48期）. Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products.

Ore Geology Reviews《矿物地质学评论》（月刊）. Ore Geology Reviews aims to familiarize all earth scientists with recent advances in a number of interconnected disciplines related to the study of, and search for, ore deposits. The reviews range from brief to longer contributions, but the journal preferentially publishes manuscripts that fill the niche between the commonly shorter journal articles and the comprehensive book coverages, and thus has a special appeal to many authors and readers.

Order-A Journal on the Theory of Ordered Sets and its Applications《序：有序集理论及其应用杂志》（一年3期）. Order presents the most original and innovative research on ordered structures and the use of order-theoretic methods in graph theory and combinatorics, lattice theory and algebra, set theory and relational structures, and the theory of computing. In each of these categories, we seek submissions that make significant use of orderings to study mathematical structures and processes. The interplay of order and combinatorics is of particular interest, as are the application of order-theoretic tools to algorithms in discrete mathematics and computing. Articles on both finite and infinite order theory are welcome.

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology《口腔外科学、口腔内科学、口腔病理学和口腔放射学》（月刊）. Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology is required reading for anyone in the fields of oral surgery, oral medicine, oral pathology, oral radiology or advanced general practice dentistry. It is the only major dental journal that provides a practical and complete overview of the medical and surgical techniques of dental practice in four areas. Topics covered include such current issues as dental implants, treatment of HIV-infected patients, and evaluation and treatment of TMJ disorders.

Oral Health and Preventive Dentistry《口腔健康与口腔预防》（不定期）. Clinicians, general practitioners, teachers, researchers, and public health administrators will find this journal an indispensable source of essential, timely information about scientific progress in the fields of oral health and the prevention of caries, periodontal diseases, oral mucosal diseases, and dental trauma. Central topics, including oral hygiene, oral epidemiology, oral health promotion, and public health issues, are covered in peer-reviewed articles, such as clinical and basic science research reports or reviews.

Oral and Maxillofacial Surgery Clinics of North America《北美口腔颌面外科临床》（季刊）. Published four times a year—February, May, August, and November—Oral and Maxillofacial Surgery Clinics of North America updates you on the latest trends in patient management and the newest advances, as well as provides a sound basis for choosing treatment options. Under the direction of an experienced guest editor, each issue focuses on a single topic in oral and maxillofacial surgery. Topics include reconstructive surgery, implants, dentoalveolar surgery, cleft and craniofacial surgery, craniomaxillofacial trauma surgery, TMJ, and cosmetic surgery.