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Articles by Yang Zhen
Integration of HPLC Amino Acid Profiling With AHP-CRITIC Guided Freeze-Drying Process Optimization, Chemical–Pharmacodynamic Equivalence, and Acute Toxicity Evaluation of Scorpio
First author: Wan Ziteng, male, Master candidate. Research direction: Quality standards and processing technology optimization of Chinese herbal pieces. E-mail: 2253976509@qq.com Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request. References , , , , and . 2026.
Elution, Porosity, and Mechanical Performance of Vancomycin-Loaded Polymethylmethacrylate (PMMA) Bone Cement
Duey, R. E., A. C. Chong, D. A. McQueen, J. L. Womack, Z. Song, T. A. Steinberger, et al. Mechanical properties and elution characteristics of polymethylmethacrylate bone cement impregnated with antibiotics for various surface area and volume constructs. Iowa Orthop J. 32:104–115, 2012. PubMed PubMed Central Google Scholar Duncan, C. P., and B. A. Masri. The role of antibiotic-loaded cement in the treatment of an infection after a hip replacement. Instr Course Lect. 44:305–313, 1995.
浅析美国专利法第112条书面描述要求及生物医药领域应对策略
CCPIT Patent & Trademark Law Office are most popular: within Compliance topic(s) with readers working within the Pharmaceuticals & BioTech and Retail & Leisure industries 一、引言 在美国专利制度的“公开换保护”核心框架下，专利申请说明书的充分披露是平衡专利权人排他权与社会公共利益的关键支点。美国专利法第112条（35 U.S.C. § 112）作为规范说明书披露标准的核心条款，为这一支点提供了明确的法律依据——要求说明书必须以完整、清晰、简明且准确的方式，披露发明的内容、制造及使用方法，确保本领域普通技术人员（Person Having Ordinary Skill in the Art, PHOSITA）能够理解并实施该发明。...
Word cloud: What overseas media say about China's economy
Xinhua crunched the data from 1,169 major overseas media outlets since the recent CPC plenum. What are the words they most often use about China's economy? Check out the word cloud: Produced by Xinhua Global Service■
Lee and Ishiba’s ‘shuttle diplomacy’: breakthrough or expediency in Japan-S.Korea ties?
South Korean President Lee Jae-myung (left) and Japan's Prime Minister Shigeru Ishiba hold a joint press conference after their summit in Tokyo on August 23, 2025. Photo: VCG South Korean President Lee Jae-myung was on a visit to Japan on Saturday and Sunday, the first time since taking office in June. He met with Japanese Prime Minister Shigeru Ishiba for around two hours in Tokyo on Saturday, and released a joint statement that outlined a number of areas of cooperation.
Freshwater Biology is a freshwater ecology journal publishing innovative papers on the aquatic biology of freshwater environments.
Shi Xiaoli Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China University of Chinese Academy of Sciences, Nanjing, China Search for more papers by this author
#AmazingChina | Experience the rituals of Spring Festival Original
The Year of the Snake is just around the corner! This Spring Festival marks the first celebration since it was inscribed on the Representative List of UNESCO's Intangible Cultural Heritage of Humanity, drawing global attention to its unique charm. From pasting spring couplets and hanging red lanterns to dragon dances and family feasts, these traditions continue to unite generations. Follow Xinhua's foreign reporter, Maria, on a journey to discover the magic and spirit of the Spring Festival.
Escalating Russia-Ukraine conflict casts shadow over peace on European continent
By Yang Zhen Following the US removal of restrictions on long-range weapons, Ukraine used the US-supplied Army Tactical Missile Systems (ATACMS) for the first time to strike a Russian ammunition depot in Russia's Bryansk region on November 19. In response, the Russian army retaliated within 48 hours.
Military rescue forces rush to plane crash site
By Yang Zhen The Korean Peninsula has been in mounting tension recently. The DPRK Foreign Ministry issued a statement on October 11th condemning the ROK for sending drones to drop anti-DPRK propaganda leaflets from the airspace over Pyongyang. On October 15th, the ROK's military fired south of the inter-Korean border after Seoul claimed that the DPRK exploded part of roads connected to South Korea.
NATO-Russia nuclear confrontation threatens global security
By Yang Zhen Security has increasingly become a core issue in international politics since the Ukraine crisis and the issue of nuclear security has risen to a new height since the Cold War. Recently, Russian President Vladimir Putin chaired a permanent conference on nuclear deterrence, an annual event within the framework of the Security Council of Russia. The meeting primarily focused on updating the foundations of the country's nuclear deterrence policy.
Will South Korea welcome Kishida’s legacy-seeking visit?
Illustration: Chen Xia/GT Northeast Asia is one of the world's geopolitical hotspots. Japan and South Korea are two key players and the only two developed countries in the region, making their bilateral relationship particularly important. But their ties have often been marked by complexities and bumps. According to South Korea's presidential office, Japanese Prime Minister Fumio Kishida will make a two-day visit to South Korea from Friday and hold summit talks with President Yoon Suk-yeol.
New US Arctic strategy reveals its hegemonic ambitions
By Yang Zhen and Li Lun Recently, the US Department of Defense (DOD) released its 2024 Arctic Strategy, marking its first update since 2019. From appointing the first Ambassador at Large for Arctic Affairs of the US to unilaterally announcing its claims to extend its continental shelf in the Arctic Ocean and other regions, and conducting military exercises like the Arctic Challenge 2023, the US has been intensifying its strategic deployment in the Arctic region.
Highly targeted RIMPAC makes Pacific less pacific
By Yang Zhen The multinational joint exercise Rim of the Pacific (RIMPAC) 2024 hosted by the US Pacific Fleet, allegedly the largest joint exercise in the world, will last from June 27 to August 1 around the Hawaiian Islands and at Pearl Harbor. According to information on the website of the US Naval Institute, 29 countries, 40 surface vessels and 3 submarines 14 national land forces, over 150 aircraft, and 25,000 personnel participated in the exercise.
Behind Japan's frequent provocations on Diaoyu Dao issue
By Yang Zhen On January 27, the Japanese fishing boat Tsurumaru and several patrol vessels illegally entered the territorial waters of the Diaoyu Dao, and Chinese coast guard ships lawfully took necessary measures to control and warn them to leave. The Diaoyu Dao dispute between China and Japan stems from Japan's encroachment on Chinese territory. Diaoyu Dao and its affliated islands have been an integral part of China's territory since ancient times.
Austin's Asia trip wreaks havoc on regional peace
By Yang Zhen IN the geopolitical chess game in East Asia, the US-Japan alliance has been the focus of attention. Recently, US Secretary of Defense Lloyd Austin embarked on his seventh visit to the Indo-Pacific region since taking office. On Thursday, he visited Japan and met with Japanese Foreign Minister Yoshimasa Hayashi and Japanese Defense Minister Yasukazu Hamada.
Austin's Asia trip wreaks havoc on regional peace
By Yang Zhen IN the geopolitical chess game in East Asia, the US-Japan alliance has been the focus of attention. Recently, US Secretary of Defense Lloyd Austin embarked on his seventh visit to the Indo-Pacific region since taking office. On Thursday, he visited Japan and met with Japanese Foreign Minister Yoshimasa Hayashi and Japanese Defense Minister Yasukazu Hamada.
Austin’s Asia trip wreaks havoc on regional peace
Illustration: Chen Xia/Global Times In the geopolitical chess game in East Asia, the US-Japan alliance has been the focus of attention. Recently, US Secretary of Defense Lloyd Austin embarked on his seventh visit to the Indo-Pacific region since taking office. On Thursday, he visited Japan and met with Japanese Foreign Minister Yoshimasa Hayashi and Japanese Defense Minister Yasukazu Hamada.
Britain's attempts to disrupt Asia-Pacific doomed to fail
By Yang Zhen and Li Lun The Defence Committee of UK's House of Commons held a meeting on the expansion of the trilateral security partnership between the US, UK and Australia, which known as the AUKUS, in early February, in an attempt to include India and Japan. Although this plan is still in the pipeline, the UK's intention to expand the AUKUS has attracted widespread attention from international public opinion.
Britain's attempts to disrupt Asia-Pacific doomed to fail
By Yang Zhen and Li Lun The Defence Committee of UK's House of Commons held a meeting on the expansion of the trilateral security partnership between the US, UK and Australia, which known as the AUKUS, in early February, in an attempt to include India and Japan. Although this plan is still in the pipeline, the UK's intention to expand the AUKUS has attracted widespread attention from international public opinion.
(Hello Africa) Feature: Delivery workers offer lifeline to Kenyans amid COVID-19
Video PlayerClose Editors' Note: From today on, Xinhua reporters in Africa will offer our global audience more diversified stories about the changing continent under the column Hello Africa. Please feel free to leave your comments on our official Twitter, Facebook and Youtube accounts China Xinhua News. The first episode focuses on a Kenyan deliveryman's endeavor during the COVID-19 pandemic. by Xinhua writers Naftali Muigai and Yang Zhen NAIROBI, Feb.
Kenya's HIV prevalence falls 1.1 pct in fiscal year 2019-20
NAIROBI, Nov. 19 (Xinhua) -- Kenya's HIV prevalence declined from 5.9 percent in the 2018-19 fiscal year to 4.8 percent in 2019-20 as the government stepped up measures to fight the disease, the Ministry of Health said on Thursday. In a report released in Nairobi, the ministry said measures included increased HIV testing to identify those infected and supply of life-saving drugs to hundreds of people in need.
WHO says vigilance key to avert COVID-19 surges in Africa during holidays
NAIROBI, Nov. 19 (Xinhua) -- The World Health Organization (WHO) on Thursday urged African countries to intensify vigilance in order to avoid a spike in COVID-19 positive cases during the holiday season. Matshidiso Moeti, WHO regional director for Africa said the holiday season, whose hallmark is intensive mobility and family reunions, could reverse gains achieved towards the pandemic's containment.
|Roundup: UNDP to boost reforestation, climate response in Kenya
NAIROBI, Nov. 18 (Xinhua) - The United Nations Development Programme (UNDP) on Wednesday pledged to support Kenya's efforts to improve forest cover and respond to climate change. Walid Badawi, UNDP Resident Representative in Kenya, said the support that is domiciled in the agency's Climate Promise Initiative is expected to revitalize national climate change programs including tree planting.
Kenya's machinery imports increase markedly on new projects
NAIROBI, Nov. 17 (Xinhua) -- The value of machinery and transport equipment being imported into Kenya has risen significantly as the east African nation implements new infrastructure projects, the country's apex bank said on Tuesday. The machinery imports hit 42.7 billion shillings (about 396 million U.S. dollars) in August, the highest level since February when it stood at 399 million dollars, new economic data released on Tuesday by the Central Bank of Kenya showed.
Somalia vows to intensify measures to curb spread of COVID-19 amid surge in cases
MOGADISHU, Nov. 17 (Xinhua) -- Somalia's health minister on Tuesday warned of a resurgence of COVID-19 infections in the country and vowed to intensify measures to contain the spread of the virus in the Horn of African nation. Fawziya Abikar, health minister, told a news conference in Mogadishu that there has been an increase in the number of people testing positive for COVID-19 in the country in the past two months.
Africa's commercial agriculture resilient despite COVID-19 disruptions, report
NAIROBI, Nov. 17 (Xinhua) -- Commercial farming in Africa has a promising future as key players defy COVID-19 disruptions to earmark additional investments to propel its growth, says a report that was launched in Nairobi on Tuesday.
Kenya to prioritize avocado exports to China
NAIROBI, Nov. 6 (Xinhua) -- Kenya plans to prioritize avocado exports to China in order to boost revenues, a government official said on Friday. Benjamin Tito, director of Horticultural Crops Directorate told Xinhua in Nairobi that sales to the Asian nation generate high returns to Kenya as they are shipped as frozen hence are value-added.
African lobby roots for extractive industry to minimize COVID-19 economic shocks
NAIROBI, Nov. 6 (Xinhua) -- Sub-Saharan African countries should leverage on revenues generated from natural resources like minerals and hydrocarbons to tame economic shocks linked to COVID-19 pandemic, a lobby group said on Friday. Alvin Mosioma, executive director of Nairobi-based Tax Justice Network Africa (TJNA) said that revenue accrued from the extractive industry could be used to plug budgetary shortfalls in the continent during the pandemic era.
Roundup: Kenya's COVID-19 cases surpass 60,000 with record daily deaths
NAIROBI, Nov. 6 (Xinhua) -- Hospitals across Kenya are grappling with an unprecedented number of COVID-19 patients as infection cases surge faster. On Friday, some 1,109 people tested positive for the virus from a sample size of 7,153, bringing Kenya's total caseload to 60,704, according to the Cabinet Secretary for Health Mutahi Kagwe. COVID-19 deaths have hit a new high, with 21 patients dying in 24 hours on Thursday, the highest record ever.
Roundup: Kenyans renew vigilance against COVID-19 after government tightens rules
NAIROBI, Nov. 5 (Xinhua) -- Shopkeepers, supermarkets, motorbike taxi riders, public transport vehicle operators, fashion stores and vegetable sellers are among businesses that on Thursday rushed to enforce anti-COVID-19 measures after the government called for strict adherence to health rules. Similarly, individual citizens picked up the cue, with a majority in the capital and its environs wearing face masks and sanitizing.
Roundup: Kenya ramps up measures to tame COVID-19 second wave
NAIROBI, Nov. 4 (Xinhua) -- Kenyan President Uhuru Kenyatta announced new measures on Wednesday in the face of a dramatic surge in COVID-19 cases in the country. Kenyatta in a televised address to the nation said the new COVID-19 containment measures include a 60 days ban on political gatherings, extension of curfew hours and greater uptake of remote learning and work.
Kenya, E. Africa trade lobby sign 12 mln USD deal to fund infrastructure
NAIROBI, Nov. 3 (Xinhua) -- Kenya and the East African trade promotion lobby, TradeMark East Africa on Tuesday signed a 1.31 billion shillings (about 12 million U.S. dollars) agreement to fund regional infrastructure projects to help boost trade.
Experts urge Africa to promote biotechnology to spur agricultural development
NAIROBI, Nov. 3 (Xinhua) -- African agricultural experts have called on governments, development agencies and regional economic communities to integrate biotechnology into the continent's agricultural development. The experts also urged governments to strengthen and harmonize biotechnology policies and biosafety regulations to create an enabling environment for biotechnology development in Africa.
Global charity decries polio spike among children in South Sudan
JUBA, Nov. 2 (Xinhua) -- International charity, Save the Children, on Monday expressed concern about a spike in polio cases among children in South Sudan as new cases put lives at further risk The charity said South Sudan has recorded nine new cases of polio just three months after the World Health Organization (WHO) declared Africa free of the wild poliovirus.
South Sudan civilians face hunger amid conflict, floods: ICRC
JUBA, Nov. 2 (Xinhua) -- The International Committee of the Red Cross (ICRC) on Monday said thousands of South Sudanese civilians were facing hunger and diseases due to civil strife and floods. The charity said in a statement issued in Juba said that conflict combined with torrential rains has escalated a humanitarian crisis as communities grapple with hunger, malnutrition, and disease in South Sudan's central, Western and Eastern Equatoria regions.
Somalia, UN laud role of women in peace building
MOGADISHU, Oct. 31 (Xinhua) -- Somalia and the UN on Saturday lauded the role played by Somali women in peace, security and governance as the world celebrated the 20th anniversary of UN Security Council Resolution 1325. Hanifa Mohamed Ibrahim, minister of women and human rights development, said the government should now create new pathways for Somali women from all generations to join forces for the future and lauded the role women have played in Somali politics and peacemaking.
Kenya launches climate information tool for grains
NAIROBI, Oct. 31 (Xinhua) -- The Nairobi based Eastern Africa Grain Council (EAGC) on Saturday launched a digital platform to enhance access to climate information among key players in the cereals' value chain. A statement from EAGC released in Nairobi said the launch of Climate Information for Grains (Ci4G) tool will strengthen the response to extreme weather events that have impacted negatively on the cereals business.
Roundup: Kenya's COVID-19 second wave severe in rural counties
NAIROBI, Oct. 30 (Xinhua) -- Kenya's rural counties are bearing the brunt of a second wave of COVID-19 that has hit the east African nation, with the disease sweeping across the regions that initially seemed safer from the virus. Since the outbreak of the disease in Kenya in March, COVID-19 was mainly concentrated in the capital Nairobi and Mombasa, the tourism bedrock at the Coast.
WFP calls for improvement of food security in Eastern Africa
NAIROBI, Oct. 16 (Xinhua) -- The UN World Food Programme (WFP) on Friday called for joint efforts from all stakeholders to improve food security in Eastern Africa. Michael Dunford, WFP Eastern Africa regional director, said the region is home to four percent of the global population but has 20 percent of the total number of acutely food insecure people in the world.
UN provides 10 mln USD for flood response in South Sudan
JUBA, Oct. 15 (Xinhua) -- The UN humanitarian agency on Thursday said it has provided 10 million U.S. dollars to support life-saving assistance to 360,000 people affected by devastating flooding in South Sudan.
Kenya's economy contracts by 5.7 pct in Q2
NAIROBI, Oct. 15 (Xinhua) -- Kenya's economy contracted by 5.7 percent in the second quarter of 2020 compared to an expansion of 5.3 percent in a similar period of 2019, the government statistics agency said on Thursday. Kenya National Bureau of Statistics (KNBS) said that although Kenya was somehow spared the severe effects of the COVID-19 pandemic in the first quarter, the economy was significantly affected by the disease in the second quarter of 2020.
African female leaders call for action on disparities in healthcare amid COVID-19 pandemic
NAIROBI, Oct. 14 (Xinhua) -- Female leaders from the Sub-Saharan Africa region on Wednesday urged governments to address growing inequalities in health care services that have worsened amid the COVID-19 pandemic. Speaking during a virtual health summit, the African female leaders and advocates said that robust policy and legislative interventions were required to address high disease burden affecting women and girls in the continent.
Feature: Kenyan artisans embrace digital apps for more business
NAIROBI, Oct. 14 (Xinhua) -- Joshua Onyango, a motor vehicle mechanic in Nairobi, Kenya's capital, browsed his smartphone keenly recently as he took a break from his work. "No customer yet," he said before returning the gadget in his pocket and continuing with his work. On the phone, Onyango was checking an app in which he has registered so that potential clients can easily access him.
Kenya says COVID-19 outbreak disrupts progress in managing disasters
NAIROBI, Oct. 13 (Xinhua) -- Kenya said on Tuesday that the outbreak of COVID-19 has disrupted all progress towards strengthening the management of disasters for enhanced community resilience. Charles Owino, director of National Disaster Operation Center in the Ministry of Interior, said that the outbreak of the COVID-19 pandemic has affected most socio-economic sectors in disaster management in the country.
Feature: Kitchen gardening spreads in Kenya amid gov't boost
NAIROBI, Oct. 12 (Xinhua) -- Used tyres, plastic containers, gunny bags and cement bags are some of the places Kenyans are growing crops as citizens embrace kitchen gardening technologies to produce food. While vegetables like collard greens, spinach and indigenous ones are the main crops grown, some households are also growing onions and tomatoes as well as fruits like strawberries and beetroots.
UN warns of food insecurity in Somalia amid threats
MOGADISHU, Sept. 30 (Xinhua) -- About 2.1 million people in Somalia face acute food insecurity between October and December due to the combined effects of severe flooding, desert locust infestation, socioeconomic impacts of COVID-19 and the cumulative impacts of previous shocks, the UN warned on Wednesday.
Chinese contractors key to real estate development in Kenya
NAIROBI, Sept. 30 (Xinhua) -- Chinese contractors have played a critical role in the development of the real estate sector in Kenya, an expert said on Wednesday. Edwin Dande, CEO of the Nairobi-based Cytonn Investments told Xinhua that Chinese firms have made it possible for Kenya to construct high-density developments that affords locals a high-quality life. "Chinese contractors have had a positive impact on real estate and so I see them as important partners for development in Kenya," Dande said.
South Sudan sets 10,000 USD ceiling for outbound travelers to curb cash outflows
JUBA, Sept. 29 (Xinhua) -- South Sudan on Tuesday said it will bar people traveling outside the country with cash exceeding 10,000 U.S. dollars in a bid to minimize cash outflows as Juba struggles to stabilize its weakened economy after years of conflict.
Experts call for scaling up of agricultural mechanization in sub-Saharan Africa
NAIROBI, Sept. 28 (Xinhua) -- Experts on Monday called for an increase in agricultural mechanization service to help transform farming in sub-Saharan Africa. The experts, who spoke during a webinar meeting in Nairobi, noted that mechanization presents a transformative potential for the region.
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