Three new species of the genus Caenis (Ephemeroptera, Caenidae), Caenis aspera sp nov , Caenis bicornis sp nov and Caenis lubrica sp nov , are described from Hong Kong, China. All type specimens...Three new species of the genus Caenis (Ephemeroptera, Caenidae), Caenis aspera sp nov , Caenis bicornis sp nov and Caenis lubrica sp nov , are described from Hong Kong, China. All type specimens are deposited in the Insect Collection of Department of Entomology, South China Agricultural University, China.展开更多
The observed long-term trends in extreme temperatures in Hong Kong were studied based on the meteorological data recorded at the Hong Kong Observatory Headquarters from 1885-2008. Results show that, over the past 124 ...The observed long-term trends in extreme temperatures in Hong Kong were studied based on the meteorological data recorded at the Hong Kong Observatory Headquarters from 1885-2008. Results show that, over the past 124 years, the extreme daily minimum and maximum temperatures, as well as the length of the warm spell in Hong Kong, exhibit statistically significant long-term rising trends, while the length of the cold spell shows a statistically significant decreasing trend. The time-dependent return period analysis also indicated that the return period for daily minimum temperature at 4°C or lower lengthened considerably from 6 years in 1900 to over 150 years in 2000, while the return periods for daily maximum temperature reaching 35°C or above shortened drastically from 32 years in 1900 to 4.5 years in 2000. Past trends in extreme temperatures from selected weather stations in southern China from 1951-2004 were also assessed. Over 70% of the stations studied yielded a statistically significant rising trend in extreme daily minimum temperature, while the trend for extreme maximum temperatures was found to vary, with no significant trend established for the majority of stations.展开更多
Six species of new records collected from intertidal mangrove/non-mangrove and subtidal cave sediments during a mangrove ecological study (1998-2001) and a marine cave expedition (2002) in Hong Kong waters are redescr...Six species of new records collected from intertidal mangrove/non-mangrove and subtidal cave sediments during a mangrove ecological study (1998-2001) and a marine cave expedition (2002) in Hong Kong waters are redescribed. These include two enoplids: Anoplostoma viviparum in Anoplostomatidae and Trissonchulus janetae in Ironidae, two chromadorids:Paracomesoma dubium and Actarjania splendens in Comesomatidae, and two monhysterids: Parodontophora marina and Parodontophora c.f. danker in Axonolaimidae. Five of them are the first records from China. Ecological and taxonomic remarks are provided and discussed in comparison with the original descriptions.展开更多
The study shows that the regional differentiation of Hong Kong direct investement(HKDI) in China was enlarged in the 1980s and has has reducing since 1991. The concentration of HKDI in the southern China and the coast...The study shows that the regional differentiation of Hong Kong direct investement(HKDI) in China was enlarged in the 1980s and has has reducing since 1991. The concentration of HKDI in the southern China and the coast has has replace by the trend of moving northwards and iulandwards after 1989. But in terms of tnanofacturing sectors this trend has not clearly appeared until now. Those changing Patterns are dearly related to the behaviour of Hong Kong industrial investors.The survey results suggest that 'enjoying lower production cost' is the most important motive for thed investment in China. In consequece, 'close to Hong Kong','cheqper labour' and 'favourable policy' are major factors for determining the investment locations. This behaviour, together with the lack of comparison study in location selection among most investors, explains that Guangdong absorbed most Hong Kong investment in the 1980s. As the production costs have been increasing in Guangdong, are companies have started to invest in non-Guangdong locations since the end of the 1980s. From the mental map of Hong Kong investors, however, only some of the non-Guangdong locations are practically attractive.展开更多
On 28 August 28, ZTE Corporation held the global launch of the Grand X LTE (T82) in Hong Kong. For this launch, ZTE partnered with China Mobile Hong Kong. Grand X LTE (T82) is the company's first single-chip LTE ...On 28 August 28, ZTE Corporation held the global launch of the Grand X LTE (T82) in Hong Kong. For this launch, ZTE partnered with China Mobile Hong Kong. Grand X LTE (T82) is the company's first single-chip LTE smartphone. It has a 1.5 GHz dual-core CPU based on advanced 28 nm technology. Compared to most phones on the market, the single-chip model is faster and more energy efficient. T82 has a 4.3-inch qHD screen, which provides exceptional HD quality. The phone has an 8 mp rear camera that supports 1080p HD video shooting and playback. The camera module with enhanced flash captures the sharpest images during the day and night. The front camera supports 720p HD video calls. T82 is also WiFi enabled and uses Android 4.0. The maximum download rate is 100 Mbps, and users have access to more than 600,000 Android applications to download. T82 also has a unique buttonless design that resembles a mini tablet.展开更多
Two surveys conducted in Hong Kong and China's Mainland reveal predictions of a quick recovery ahead for both economies.The surveys were conducted by CPA Australia,with the Hong Kong survey jointly sponsored by De...Two surveys conducted in Hong Kong and China's Mainland reveal predictions of a quick recovery ahead for both economies.The surveys were conducted by CPA Australia,with the Hong Kong survey jointly sponsored by Deloitte China and CPA Australia’s Hong Kong China division.展开更多
The vast expanse of Mesozoic igneous rocks in Hong Kong contain important geological records of late Mesozoic magmatic events and tectonic processes from the coastal region of Southeast China. Of these,the Ping Chau F...The vast expanse of Mesozoic igneous rocks in Hong Kong contain important geological records of late Mesozoic magmatic events and tectonic processes from the coastal region of Southeast China. Of these,the Ping Chau Formation in the northwestern New Territories is the youngest known stratum. We perform a detailed study of the volcanic rocks of the Ping Chau Formation utilizing zircon U-Pb dating,with major and trace elements geochemistry. LA-ICP-MS zircon U-Pb data reveal Early Cretaceous age from two volcanic rock samples, with zircon crystallization from magmas at 140.3 ± 0.8 Ma and 139.3 ± 0.9 Ma,respectively. These rocks have high contents of total alkalis(Na_2O + K_2O = 5.58-9.45 wt.%), high-field-strength elements and light rare earth elements, conspicuous negative Eu anomalies, and depletions in Nb, Ta, Ti, Sr, Ba and P. Using this data, in combination with previous studies on the late Mesozoic volcanic belt in Southeast China, we propose that the volcanic rocks of the Ping Chau Formation probably originated from deep melting of the crust in a back-arc extensional setting induced by the subduction of the paleo-Pacific Plate. This formation represents the final stages of Early Cretaceous volcanic activity in Hong Kong, as associated with large-scale lithospheric extension, thinning and magmatism. Our results provide new information that can be used in evaluating the significance of Early Cretaceous volcanism and tectonics in Southeast China.展开更多
Based on geographic information system(GIS) spatial analysis technology, the spatial pattern of raster grid transport accessibility for the Guangdong-Hong Kong-Macao Greater Bay area was studied and the states of spat...Based on geographic information system(GIS) spatial analysis technology, the spatial pattern of raster grid transport accessibility for the Guangdong-Hong Kong-Macao Greater Bay area was studied and the states of spatial connectedness were simulated using highway passenger transport, railway passenger transport, port passenger transport and aviation passenger transport data. The result shows that transport accessibility within the Guangdong-Hong Kong-Macao Greater Bay area costs ‘one hour’ and the spatial distribution of accessibility in the area presents clear ‘core-periphery’ spatial characteristics, with Guangzhou, Foshan, Shenzhen constituting the core. The transport accessibility of Guangdong-Hong Kong-Macao is high. Average accessibility of urban nodes as measured by travel time is 0.99 h, and the areas accessible within 1.42 h occupy 79.14% of the total area. Most of the areas with the lowest accessibility are found in the peripheral area, with the worst accessibility being 4.73 h. Compared with the west-side cities, the economically developed east-side cities of the Guangdong-Hong Kong-Macao Greater Bay area have higher connectivity with roads, railways, ports, and aviation transport. Guangzhou, Foshan, Zhuhai, Shenzhen, Hong Kong and Macao are closely linked. The higher the accessibility, the closer the intercity connectedness.展开更多
The Port Island Formation(PIF), a typical Cretaceous red bed in Hong Kong, is dominated by non-fossiliferous, reddish clastic rocks, making it difficult to determine the sedimentary age of PIF precisely. Previous stud...The Port Island Formation(PIF), a typical Cretaceous red bed in Hong Kong, is dominated by non-fossiliferous, reddish clastic rocks, making it difficult to determine the sedimentary age of PIF precisely. Previous studies assigned the PIF to Late Cretaceous provisionally only on the basis of its stratigraphic sequence and lithology. This study identified a tuffite interlayer in the PIF and a zircon UPb age of 128.2±2.7 Ma by LA-ICP-MS method was obtained. It’s the first time to date the depositional age of the PIF with a reliable chronological constraint. With the support of stratigraphic evidence, we concluded that the geological age of PIF should be Early Cretaceous rather than Late Cretaceous. Based on the volcanic history of Hong Kong and Southeast China and the distribution of the PIF in Mirs Bay, it is believed that there was no volcanic activity in Hong Kong in ca. 128 Ma. The tuffite interlayer discovered in PIF was formed by the deposition of volcanic ash, which might originate from remote region outside Hong Kong, in an aquatic environment on Port Island. The identification of the tuffite interlayer, as the response to a volcanic event, has great significance not only to the studies of establishment and regional correlation of the strata system and the geological evolution in Hong Kong,but also to the study of volcanic activities in Southeast China.展开更多
The long term trend of ozone level in Hong Kong has been investigated. One of the characteristics of ozone level in Hong Kong is the existence of autumn maximum and summer minimum. Observations of the diurnal variatio...The long term trend of ozone level in Hong Kong has been investigated. One of the characteristics of ozone level in Hong Kong is the existence of autumn maximum and summer minimum. Observations of the diurnal variation of ozone level have been made in different area categories. There are early morning peak and afternoon peak occurred in the diurnal variation, which are different from some metropolitans where only an afternoon peak is observed. A negative correlation coefficient was found between monthly ozone level with nitric oxide level. On the contrary, there is a positive correlation between ozone and nitrogen dioxide. The positive correlation coefficient between nitric oxide and nitrogen dioxide shows that the total amount of nitric oxide emitted from a series of moving and fixed sources greatly exceeded the stoichiometric amount of ozone formed from chemical reactions of precursors and long distance transportation.展开更多
The field of plastic surgery has developed rapidly in the last couple of decades in Hong Kong and Shanghai,China.Both cities have their own educational system for training plastic surgeons.Their training programs diff...The field of plastic surgery has developed rapidly in the last couple of decades in Hong Kong and Shanghai,China.Both cities have their own educational system for training plastic surgeons.Their training programs differ in many ways,including the surgical exposure of undergraduate studies,the structure,curriculum,and operative requirements of residency training.In general,Hong Kong has a single pathway of residency training with more early clinical exposure in an undergraduate study.On the contrary,Shanghai has multiple pathways of residency training that are heavily emphasized in academic research.Both Hong Kong and Shanghai should complement each other to modify their plastic surgery training programs that will eventually benefit the field of plastic surgery education。展开更多
Since 1840,333 native tree species have been recorded in Hong Kong.However,as a result of past and present land use practices,many forest tree taxa are in danger of extinction.Since the late 1970s,a systematic conserv...Since 1840,333 native tree species have been recorded in Hong Kong.However,as a result of past and present land use practices,many forest tree taxa are in danger of extinction.Since the late 1970s,a systematic conservation system has been established in Hong Kong.Most of the forest and many plant species are protected by law.This paper reports the current conservation status of the tree flora of Hong Kong,based on a study of forest ecology and floristics between 1989~1996.The relevance of Hong Kong’s experience to the conservation of China’s tree flora is also briefly discussed.展开更多
The UK has been keeping a close eye on Hong Kong,not only because of their traditional historical links but also to maintain its own political and economic interests.With Hong Kong undergoing rapid changes in recent y...The UK has been keeping a close eye on Hong Kong,not only because of their traditional historical links but also to maintain its own political and economic interests.With Hong Kong undergoing rapid changes in recent years,the UK's policy on Hong Kong has also made some adjustments.It still calls on restarting political reform in Hong Kong,emphasizing the importance of judicial independence,and trying to use Hong Kong to expand trade in China and in the Asia-Pacific region.In the future,China should pay more attention to UK's policy on Hong Kong under the framework of China-UK relations.展开更多
文摘Three new species of the genus Caenis (Ephemeroptera, Caenidae), Caenis aspera sp nov , Caenis bicornis sp nov and Caenis lubrica sp nov , are described from Hong Kong, China. All type specimens are deposited in the Insect Collection of Department of Entomology, South China Agricultural University, China.
文摘The observed long-term trends in extreme temperatures in Hong Kong were studied based on the meteorological data recorded at the Hong Kong Observatory Headquarters from 1885-2008. Results show that, over the past 124 years, the extreme daily minimum and maximum temperatures, as well as the length of the warm spell in Hong Kong, exhibit statistically significant long-term rising trends, while the length of the cold spell shows a statistically significant decreasing trend. The time-dependent return period analysis also indicated that the return period for daily minimum temperature at 4°C or lower lengthened considerably from 6 years in 1900 to over 150 years in 2000, while the return periods for daily maximum temperature reaching 35°C or above shortened drastically from 32 years in 1900 to 4.5 years in 2000. Past trends in extreme temperatures from selected weather stations in southern China from 1951-2004 were also assessed. Over 70% of the stations studied yielded a statistically significant rising trend in extreme daily minimum temperature, while the trend for extreme maximum temperatures was found to vary, with no significant trend established for the majority of stations.
基金funded by National Key Basic Research Program from the Ministry of Science and Technology,People’s Repubfic of China(G 19990437)also supported by the National Natural Science Foundation of China(No.40176033)
文摘Six species of new records collected from intertidal mangrove/non-mangrove and subtidal cave sediments during a mangrove ecological study (1998-2001) and a marine cave expedition (2002) in Hong Kong waters are redescribed. These include two enoplids: Anoplostoma viviparum in Anoplostomatidae and Trissonchulus janetae in Ironidae, two chromadorids:Paracomesoma dubium and Actarjania splendens in Comesomatidae, and two monhysterids: Parodontophora marina and Parodontophora c.f. danker in Axonolaimidae. Five of them are the first records from China. Ecological and taxonomic remarks are provided and discussed in comparison with the original descriptions.
文摘The study shows that the regional differentiation of Hong Kong direct investement(HKDI) in China was enlarged in the 1980s and has has reducing since 1991. The concentration of HKDI in the southern China and the coast has has replace by the trend of moving northwards and iulandwards after 1989. But in terms of tnanofacturing sectors this trend has not clearly appeared until now. Those changing Patterns are dearly related to the behaviour of Hong Kong industrial investors.The survey results suggest that 'enjoying lower production cost' is the most important motive for thed investment in China. In consequece, 'close to Hong Kong','cheqper labour' and 'favourable policy' are major factors for determining the investment locations. This behaviour, together with the lack of comparison study in location selection among most investors, explains that Guangdong absorbed most Hong Kong investment in the 1980s. As the production costs have been increasing in Guangdong, are companies have started to invest in non-Guangdong locations since the end of the 1980s. From the mental map of Hong Kong investors, however, only some of the non-Guangdong locations are practically attractive.
文摘On 28 August 28, ZTE Corporation held the global launch of the Grand X LTE (T82) in Hong Kong. For this launch, ZTE partnered with China Mobile Hong Kong. Grand X LTE (T82) is the company's first single-chip LTE smartphone. It has a 1.5 GHz dual-core CPU based on advanced 28 nm technology. Compared to most phones on the market, the single-chip model is faster and more energy efficient. T82 has a 4.3-inch qHD screen, which provides exceptional HD quality. The phone has an 8 mp rear camera that supports 1080p HD video shooting and playback. The camera module with enhanced flash captures the sharpest images during the day and night. The front camera supports 720p HD video calls. T82 is also WiFi enabled and uses Android 4.0. The maximum download rate is 100 Mbps, and users have access to more than 600,000 Android applications to download. T82 also has a unique buttonless design that resembles a mini tablet.
文摘Two surveys conducted in Hong Kong and China's Mainland reveal predictions of a quick recovery ahead for both economies.The surveys were conducted by CPA Australia,with the Hong Kong survey jointly sponsored by Deloitte China and CPA Australia’s Hong Kong China division.
基金funded by the Hong Kong Agriculture, Fisheries and Conservation Department Investigation Program (Grant No. AFCD/SQ/92/14)
文摘The vast expanse of Mesozoic igneous rocks in Hong Kong contain important geological records of late Mesozoic magmatic events and tectonic processes from the coastal region of Southeast China. Of these,the Ping Chau Formation in the northwestern New Territories is the youngest known stratum. We perform a detailed study of the volcanic rocks of the Ping Chau Formation utilizing zircon U-Pb dating,with major and trace elements geochemistry. LA-ICP-MS zircon U-Pb data reveal Early Cretaceous age from two volcanic rock samples, with zircon crystallization from magmas at 140.3 ± 0.8 Ma and 139.3 ± 0.9 Ma,respectively. These rocks have high contents of total alkalis(Na_2O + K_2O = 5.58-9.45 wt.%), high-field-strength elements and light rare earth elements, conspicuous negative Eu anomalies, and depletions in Nb, Ta, Ti, Sr, Ba and P. Using this data, in combination with previous studies on the late Mesozoic volcanic belt in Southeast China, we propose that the volcanic rocks of the Ping Chau Formation probably originated from deep melting of the crust in a back-arc extensional setting induced by the subduction of the paleo-Pacific Plate. This formation represents the final stages of Early Cretaceous volcanic activity in Hong Kong, as associated with large-scale lithospheric extension, thinning and magmatism. Our results provide new information that can be used in evaluating the significance of Early Cretaceous volcanism and tectonics in Southeast China.
基金Under the auspices of National Natural Science Foundation of China(No.41671160,41701169)
文摘Based on geographic information system(GIS) spatial analysis technology, the spatial pattern of raster grid transport accessibility for the Guangdong-Hong Kong-Macao Greater Bay area was studied and the states of spatial connectedness were simulated using highway passenger transport, railway passenger transport, port passenger transport and aviation passenger transport data. The result shows that transport accessibility within the Guangdong-Hong Kong-Macao Greater Bay area costs ‘one hour’ and the spatial distribution of accessibility in the area presents clear ‘core-periphery’ spatial characteristics, with Guangzhou, Foshan, Shenzhen constituting the core. The transport accessibility of Guangdong-Hong Kong-Macao is high. Average accessibility of urban nodes as measured by travel time is 0.99 h, and the areas accessible within 1.42 h occupy 79.14% of the total area. Most of the areas with the lowest accessibility are found in the peripheral area, with the worst accessibility being 4.73 h. Compared with the west-side cities, the economically developed east-side cities of the Guangdong-Hong Kong-Macao Greater Bay area have higher connectivity with roads, railways, ports, and aviation transport. Guangzhou, Foshan, Zhuhai, Shenzhen, Hong Kong and Macao are closely linked. The higher the accessibility, the closer the intercity connectedness.
基金supported by the Youth Innovation Promotion Association CAS (2017085)geological survey program of Agriculture, Fisheries and Conservation Department of Hong Kong Special Administrative Region (AFCD/SQ/92/14)
文摘The Port Island Formation(PIF), a typical Cretaceous red bed in Hong Kong, is dominated by non-fossiliferous, reddish clastic rocks, making it difficult to determine the sedimentary age of PIF precisely. Previous studies assigned the PIF to Late Cretaceous provisionally only on the basis of its stratigraphic sequence and lithology. This study identified a tuffite interlayer in the PIF and a zircon UPb age of 128.2±2.7 Ma by LA-ICP-MS method was obtained. It’s the first time to date the depositional age of the PIF with a reliable chronological constraint. With the support of stratigraphic evidence, we concluded that the geological age of PIF should be Early Cretaceous rather than Late Cretaceous. Based on the volcanic history of Hong Kong and Southeast China and the distribution of the PIF in Mirs Bay, it is believed that there was no volcanic activity in Hong Kong in ca. 128 Ma. The tuffite interlayer discovered in PIF was formed by the deposition of volcanic ash, which might originate from remote region outside Hong Kong, in an aquatic environment on Port Island. The identification of the tuffite interlayer, as the response to a volcanic event, has great significance not only to the studies of establishment and regional correlation of the strata system and the geological evolution in Hong Kong,but also to the study of volcanic activities in Southeast China.
文摘The long term trend of ozone level in Hong Kong has been investigated. One of the characteristics of ozone level in Hong Kong is the existence of autumn maximum and summer minimum. Observations of the diurnal variation of ozone level have been made in different area categories. There are early morning peak and afternoon peak occurred in the diurnal variation, which are different from some metropolitans where only an afternoon peak is observed. A negative correlation coefficient was found between monthly ozone level with nitric oxide level. On the contrary, there is a positive correlation between ozone and nitrogen dioxide. The positive correlation coefficient between nitric oxide and nitrogen dioxide shows that the total amount of nitric oxide emitted from a series of moving and fixed sources greatly exceeded the stoichiometric amount of ozone formed from chemical reactions of precursors and long distance transportation.
基金supported by grants from the Youth Doctor Collaborative Innovation Team Project(QC201803)of Shanghai Ninth People’s Hospital,Shanghai Jiao Tong University School of Medicinethe Project of Biobank(NO.YBKA201901)from Shanghai Ninth People’s Hospital,Shanghai Jiao Tong University School of Medicine+1 种基金the Shanghai Youth Top-Notch Talent Program(201809004)“Chenguang Program”supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission(19CG18)and Science and Technology Commission of Shanghai Municipality(19JC1413),Shanghai Rising-Star Program(20QA1405600).
文摘The field of plastic surgery has developed rapidly in the last couple of decades in Hong Kong and Shanghai,China.Both cities have their own educational system for training plastic surgeons.Their training programs differ in many ways,including the surgical exposure of undergraduate studies,the structure,curriculum,and operative requirements of residency training.In general,Hong Kong has a single pathway of residency training with more early clinical exposure in an undergraduate study.On the contrary,Shanghai has multiple pathways of residency training that are heavily emphasized in academic research.Both Hong Kong and Shanghai should complement each other to modify their plastic surgery training programs that will eventually benefit the field of plastic surgery education。
文摘Since 1840,333 native tree species have been recorded in Hong Kong.However,as a result of past and present land use practices,many forest tree taxa are in danger of extinction.Since the late 1970s,a systematic conservation system has been established in Hong Kong.Most of the forest and many plant species are protected by law.This paper reports the current conservation status of the tree flora of Hong Kong,based on a study of forest ecology and floristics between 1989~1996.The relevance of Hong Kong’s experience to the conservation of China’s tree flora is also briefly discussed.
文摘The UK has been keeping a close eye on Hong Kong,not only because of their traditional historical links but also to maintain its own political and economic interests.With Hong Kong undergoing rapid changes in recent years,the UK's policy on Hong Kong has also made some adjustments.It still calls on restarting political reform in Hong Kong,emphasizing the importance of judicial independence,and trying to use Hong Kong to expand trade in China and in the Asia-Pacific region.In the future,China should pay more attention to UK's policy on Hong Kong under the framework of China-UK relations.