A starvation trial was conducted to determine compensatory growth of the juvenile golden pompano Trachinotus ovatus which were deprived of food for 1, 2, 5 and 7 days respectively. The results of tests in outdoor ceme...A starvation trial was conducted to determine compensatory growth of the juvenile golden pompano Trachinotus ovatus which were deprived of food for 1, 2, 5 and 7 days respectively. The results of tests in outdoor cement pools and net pens showed that, in the first 15 days and 30 days, the growth of 1 day and 2 days-deprived groups was probably the same with that of control group, which accorded with fully compensatory description. However, the weight of 5 days and 7 days-deprived fingerlings were lower than that of the control group, which accorded with the description of the partial compensatory growth. As the starvation prolonged, feed conversion efficiency of the starved groups increased and was higher than the control group. Meanwhile, feeding rate also increased, but the fish of 1 day and 2 days-deprived groups was lower than that of the control group, and feeding quantity reduced and was lower than that of the control group. It suggested that the mechanism of compensatory growth was mainly due to improving feed conversion efficiency. Fish biochemical composition was analyzed： the water content and ash of fish sample increased due to starvation, while the lipid and protein decreased. The loss of lipid was greater than that of the protein, and the biochemical composition of fish in each group was restored to the control level by the end of the experiment. It suggested that Trachinotus ovatus may mainly consume lipid during the period of starvation.展开更多
Water-Soluble Chitosan(WSC)has been sucessfuly synthesized from squid pens waste.The synthesis of chitosan from chitin was carried out by optimization of deacetylation temperature and time.Chitin was obtained from squ...Water-Soluble Chitosan(WSC)has been sucessfuly synthesized from squid pens waste.The synthesis of chitosan from chitin was carried out by optimization of deacetylation temperature and time.Chitin was obtained from squid pens waste by demineralization and deproteinization process.HCl 7%was used for demineralization and NaOH 10%at 60℃ was applied for deproteinization process.Deacetylation reaction was carried out at varied temperatures i.e.,60℃,70℃,80℃,90℃ and 100℃ in NaOH 50%solution for 10 hours.Deacetylation reaction time were varied for 2 hours,4 hours,6 hours,8 hours,and 10 hours.The crude chitosan obtained then reacted with H2O230%to depolymerize.The synthesis product obtained then characterized by FTIR.The result of squid chitin yield was 33.9%.The optimum temperature and time of chitosan deacetylation process were 90℃ for 8 hours as indicated by the value of deacetylation degree(DD)that equal to 83.94%at optimum temperature and 82.22%at optimum reaction time.The percentage of WSC yield at optimum temperature(90℃)and optimum time(8 hours)were 27.59%and 23.16%,respectively.WSC solubility test was done in water and HCl 0,1N.The solubility of 2.8325 mg/mL and 0.8125 mg/mL were obtained in acid medium and water medium,respectively.展开更多
The article Jetting-based bioprinting:process,dispense physics,and applications,written by Wei Long Ng and Viktor Shkolnikov,was originally published electronically on the publisher’s internet portal on 12 July 2024 ...The article Jetting-based bioprinting:process,dispense physics,and applications,written by Wei Long Ng and Viktor Shkolnikov,was originally published electronically on the publisher’s internet portal on 12 July 2024 without open access.展开更多
A high rate of improper antibiotic dispensing was reported to patients with presumed viral infections even without a prescription from a physician in Vietnam[1]. Imprudent antibiotic dispensing and use were also obser...A high rate of improper antibiotic dispensing was reported to patients with presumed viral infections even without a prescription from a physician in Vietnam[1]. Imprudent antibiotic dispensing and use were also observed in other countries, including the Philippines. A large number of patients experienced respiratory symptoms, such as cough and rhinorrhea during the COVID-19 pandemic, which exacerbated this problem with antibiotic use.展开更多
During the Eighth Five-Year Plan period, (1991-95), China’s pen industry maintained sustained, rapid, stable and sound development with the further promotion of product quality and grade in production, and its techno...During the Eighth Five-Year Plan period, (1991-95), China’s pen industry maintained sustained, rapid, stable and sound development with the further promotion of product quality and grade in production, and its technological advancement. At the same time, new varieties of products and more patterns and specifications were developed. The industry also further developed its business ties with clients abroad and ex-展开更多
Sea pens are a highly specialized and morphologically distinct group of octocorallians,but many taxa were poorly described and their phylogenetic relationships are still poorly known.We describe two species of sea pen...Sea pens are a highly specialized and morphologically distinct group of octocorallians,but many taxa were poorly described and their phylogenetic relationships are still poorly known.We describe two species of sea pens collected from the tropical Western Pacific:Alloptilella splendida gen.et sp.nov.and Scytalium veneris(Thomson&Henderson,1906).Alloptilella splendida gen.et sp.nov.accords with the definition of the recently resurrected genus Ptilella Gray,1870 in most characters,but differs from the latter in the arrangement of autozooids and the location of mesozooids.The new species mostly resembles Pennatula naresi K(o|")lliker(1880),but differs by the location of me sozooids and the reddish color of sclerite s surrounding siphonozooids.The generic separation is also well supported by their genetic distances and the molecular phylogenetic trees constructed by the concatenated mtMutS-COI-28 S,where Alloptilella clustered with Scytalium Herklots,1858 and formed a clade with the cluster of Ptilella and Distichoptilum.Scytalium veneris,usually considered as a junior synonym of Scytalium sarsii Herklots,1858,is resurrected by recognizing their distinctive differences.This is the first record of Scytalium veneris outside its type locality,and the phylogenetic analysis indicates that Scytalium is a monophyletic group.Both the families Pennatulidae and Virgulariidae are polyphyletic,and more morphological and molecular data are needed to clarify the phylogenetic positions of pennatulacean families and genera.展开更多
What is already known about this topic?Oncomelania hupensis(O.hupensis)is the only intermediate host of Schistosoma japonica.The distribution of O.hupensis is affected by a series of climate,geographical,sand ocioecon...What is already known about this topic?Oncomelania hupensis(O.hupensis)is the only intermediate host of Schistosoma japonica.The distribution of O.hupensis is affected by a series of climate,geographical,sand ocioeconomic factors,which reflect the risk areas of schistosomiasis.What is added by this report?There were certain geographical aggregations in the potential high distribution areas of O.hupensis,which were mainly distributed in Poyang Lake area,Dongting Lake area,and the middle and the lower reaches of the Yangtze River.What are the implications for public health practice?Monitoring and forecasting the distribution of O.hupensis is conducive to improving the early warning capabilities of the potential risk of schistosomiasis transmission and progressively promoting the elimination of schistosomiasis nationwide.展开更多
In the training studio of the School of Architecture and Engineering at Xizang Vocational Technical College,Lhasa,Gyatso,a senior artist specializing in Tibetan-style architectural decorative painting,bent over to dem...In the training studio of the School of Architecture and Engineering at Xizang Vocational Technical College,Lhasa,Gyatso,a senior artist specializing in Tibetan-style architectural decorative painting,bent over to demonstrate a student how to paint.His left hand steadied the painting board,while his right hand held a brush pen to present the Tibetan-style painting technique of"blurring"-dipping the brush lightly into the pigment,spreading it from dark to light on the paper.The eight-petaled lotus,a symbol of auspiciousness,gradually took shape,blossoming with layers of vitality.展开更多
La 28e session de la Conférence des Parties de la Convention-cadre des Nattions unies sur les changements climatiques s'est tenue à Dubaï.Emirats arabes unis,tu 30 novembre au 12 décembre 2023....La 28e session de la Conférence des Parties de la Convention-cadre des Nattions unies sur les changements climatiques s'est tenue à Dubaï.Emirats arabes unis,tu 30 novembre au 12 décembre 2023.l'aceàl'urgence du changement climatique.un enjeu mondial.展开更多
Lsixieme Exposition internationale des importations de Chine(CIIE)s'est ouverte a Shanghai le 5 novembre,sur le theme<Nouvelle ere,avenir partage>.Le Preésident chinois Xi Jinping a envoye une lettre de...Lsixieme Exposition internationale des importations de Chine(CIIE)s'est ouverte a Shanghai le 5 novembre,sur le theme<Nouvelle ere,avenir partage>.Le Preésident chinois Xi Jinping a envoye une lettre de felicitations a I'exposition,declarant que la CIE avait apporte une contribution positive a la creation d'un nouveau modele de développement et a la promotion du développement economique mondial.展开更多
The excreta of pig is generally utilized to induce pigs to excrete in particular area,which reduces the subsequent work required to clean pens.This paper discussed a new induction device design based on the biological...The excreta of pig is generally utilized to induce pigs to excrete in particular area,which reduces the subsequent work required to clean pens.This paper discussed a new induction device design based on the biological characteristics of pigs.Using different induction materials in the devices,the frequency and location of the excretory behavior of pigs through five treatments and a control group were compared.According to the results,different induction methods had significant(p<0.05)effects on frequency and duration of excretory behavior.Compared to the conventional induction method,the induction devices were significantly(p<0.05)more effective in training pigs to excrete in the assigned area,the most effective material used in the induction devices was feces.If the inductive feces had been preserved in the air for a longer time,the effect of inducing excretory behavior would have been more obvious.Empty devices did not work to induce pigs to excrete in the induction area.展开更多
Conversation B Susie:I know.Pencils are also better for drawing.You can make lines lighter or darker.Sam:But you have to sharpen pencils or add lead to them.Susie:You do.But pencils last longer than pens.Pen ink can d...Conversation B Susie:I know.Pencils are also better for drawing.You can make lines lighter or darker.Sam:But you have to sharpen pencils or add lead to them.Susie:You do.But pencils last longer than pens.Pen ink can dry out,but pencil lead doesn’t.Sam:But words look neater when you write in pen.Susie:They do.So,which pen do you want?Sam:One with blue ink,thanks.展开更多
一、阅读理解[核心素养·文化意识](2024·贵州铜仁一模) The brush pen, one of the “Four Treasures of the Study”, was invented thou-sands of years ago. However, the oldest pen was just a stick or a piece of bamb...一、阅读理解[核心素养·文化意识](2024·贵州铜仁一模) The brush pen, one of the “Four Treasures of the Study”, was invented thou-sands of years ago. However, the oldest pen was just a stick or a piece of bamboo. It was difficult for people to write well on thin silk.展开更多
Both the Todo Alphabet written with bambuu pen that is kept by Burintögs Khagai in County Zhaosu and the one written with soft brush that is kept by Namrjil Vjar have distinct characteristics in symbols for vowel...Both the Todo Alphabet written with bambuu pen that is kept by Burintögs Khagai in County Zhaosu and the one written with soft brush that is kept by Namrjil Vjar have distinct characteristics in symbols for vowels,consonants,terminal letters and transcription letters.The two of them fundamentally adhered to the orthography established by Zaya Pandida and most likely were compiled in the transitional phase of the todo script.展开更多
Accurate atomic mass data hold significant application value in various research fields,in which Penning trap mass spectrometry is considered the most precise experimental method.A cryogenic detection system is a key ...Accurate atomic mass data hold significant application value in various research fields,in which Penning trap mass spectrometry is considered the most precise experimental method.A cryogenic detection system is a key component for reading out the image charge of charged particles in Penning traps using the Fourier transform ion cyclotron resonance technique.In this paper,we present the development and characteristics of this detection system,which includes a superconducting resonator and cryogenic low-noise amplifiers.The resonator consists of delicately woven thin NbTi wires configured into a multilayer helical coil,offering a quality factor of 98004 at around 1 MHz.Low-noise amplifiers are developed based on GaAs field effect transistors,exhibiting amplification factors greater than 27 dB with a power consumption of approximately 6 mW in the frequency range of 0.1 to 10 MHz.The lowest input voltage noise is 0.8√Hz at 1 MHz.The fabrication process,operation,and measurements are elucidated in detail.展开更多
基金Supported by Ocean Public Welfare Scientific Research Project,State Oceanic Administration of the People's Republic of China(Grant No.201205028)Key Projects in the National Science&Technology Pillar Program during the Twelfth Five-year Plan Period(2011BD13B11)Hainan Scientific Operating Expense Projects and Major Project of Science and Technology(ZDZX2013009,ZDZX2013014)
文摘A starvation trial was conducted to determine compensatory growth of the juvenile golden pompano Trachinotus ovatus which were deprived of food for 1, 2, 5 and 7 days respectively. The results of tests in outdoor cement pools and net pens showed that, in the first 15 days and 30 days, the growth of 1 day and 2 days-deprived groups was probably the same with that of control group, which accorded with fully compensatory description. However, the weight of 5 days and 7 days-deprived fingerlings were lower than that of the control group, which accorded with the description of the partial compensatory growth. As the starvation prolonged, feed conversion efficiency of the starved groups increased and was higher than the control group. Meanwhile, feeding rate also increased, but the fish of 1 day and 2 days-deprived groups was lower than that of the control group, and feeding quantity reduced and was lower than that of the control group. It suggested that the mechanism of compensatory growth was mainly due to improving feed conversion efficiency. Fish biochemical composition was analyzed： the water content and ash of fish sample increased due to starvation, while the lipid and protein decreased. The loss of lipid was greater than that of the protein, and the biochemical composition of fish in each group was restored to the control level by the end of the experiment. It suggested that Trachinotus ovatus may mainly consume lipid during the period of starvation.
基金funded by Institute for Research and Community Services(LPPM,Lembaga Penelitian and Pengabdian Masyarakat)ITS(1438/PKS/ITS/2018)The research facilities were supported by Chemistry Department,Faculty Sciences,Institut Teknologi Sepuluh Nopember,Surabaya(ITS).
文摘Water-Soluble Chitosan(WSC)has been sucessfuly synthesized from squid pens waste.The synthesis of chitosan from chitin was carried out by optimization of deacetylation temperature and time.Chitin was obtained from squid pens waste by demineralization and deproteinization process.HCl 7%was used for demineralization and NaOH 10%at 60℃ was applied for deproteinization process.Deacetylation reaction was carried out at varied temperatures i.e.,60℃,70℃,80℃,90℃ and 100℃ in NaOH 50%solution for 10 hours.Deacetylation reaction time were varied for 2 hours,4 hours,6 hours,8 hours,and 10 hours.The crude chitosan obtained then reacted with H2O230%to depolymerize.The synthesis product obtained then characterized by FTIR.The result of squid chitin yield was 33.9%.The optimum temperature and time of chitosan deacetylation process were 90℃ for 8 hours as indicated by the value of deacetylation degree(DD)that equal to 83.94%at optimum temperature and 82.22%at optimum reaction time.The percentage of WSC yield at optimum temperature(90℃)and optimum time(8 hours)were 27.59%and 23.16%,respectively.WSC solubility test was done in water and HCl 0,1N.The solubility of 2.8325 mg/mL and 0.8125 mg/mL were obtained in acid medium and water medium,respectively.
文摘The article Jetting-based bioprinting:process,dispense physics,and applications,written by Wei Long Ng and Viktor Shkolnikov,was originally published electronically on the publisher’s internet portal on 12 July 2024 without open access.
文摘A high rate of improper antibiotic dispensing was reported to patients with presumed viral infections even without a prescription from a physician in Vietnam[1]. Imprudent antibiotic dispensing and use were also observed in other countries, including the Philippines. A large number of patients experienced respiratory symptoms, such as cough and rhinorrhea during the COVID-19 pandemic, which exacerbated this problem with antibiotic use.
文摘During the Eighth Five-Year Plan period, (1991-95), China’s pen industry maintained sustained, rapid, stable and sound development with the further promotion of product quality and grade in production, and its technological advancement. At the same time, new varieties of products and more patterns and specifications were developed. The industry also further developed its business ties with clients abroad and ex-
基金the Science&Technology Basic Resources Investigation Program of China(No.2017FY100804)the National Natural Science Foundation of China(Nos.41930533,31970489)+1 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB42000000)the Senior User Project of R/V Kexue(Nos.KEXUE2019GZ04,KEXUE2020G01)。
文摘Sea pens are a highly specialized and morphologically distinct group of octocorallians,but many taxa were poorly described and their phylogenetic relationships are still poorly known.We describe two species of sea pens collected from the tropical Western Pacific:Alloptilella splendida gen.et sp.nov.and Scytalium veneris(Thomson&Henderson,1906).Alloptilella splendida gen.et sp.nov.accords with the definition of the recently resurrected genus Ptilella Gray,1870 in most characters,but differs from the latter in the arrangement of autozooids and the location of mesozooids.The new species mostly resembles Pennatula naresi K(o|")lliker(1880),but differs by the location of me sozooids and the reddish color of sclerite s surrounding siphonozooids.The generic separation is also well supported by their genetic distances and the molecular phylogenetic trees constructed by the concatenated mtMutS-COI-28 S,where Alloptilella clustered with Scytalium Herklots,1858 and formed a clade with the cluster of Ptilella and Distichoptilum.Scytalium veneris,usually considered as a junior synonym of Scytalium sarsii Herklots,1858,is resurrected by recognizing their distinctive differences.This is the first record of Scytalium veneris outside its type locality,and the phylogenetic analysis indicates that Scytalium is a monophyletic group.Both the families Pennatulidae and Virgulariidae are polyphyletic,and more morphological and molecular data are needed to clarify the phylogenetic positions of pennatulacean families and genera.
文摘What is already known about this topic?Oncomelania hupensis(O.hupensis)is the only intermediate host of Schistosoma japonica.The distribution of O.hupensis is affected by a series of climate,geographical,sand ocioeconomic factors,which reflect the risk areas of schistosomiasis.What is added by this report?There were certain geographical aggregations in the potential high distribution areas of O.hupensis,which were mainly distributed in Poyang Lake area,Dongting Lake area,and the middle and the lower reaches of the Yangtze River.What are the implications for public health practice?Monitoring and forecasting the distribution of O.hupensis is conducive to improving the early warning capabilities of the potential risk of schistosomiasis transmission and progressively promoting the elimination of schistosomiasis nationwide.
文摘In the training studio of the School of Architecture and Engineering at Xizang Vocational Technical College,Lhasa,Gyatso,a senior artist specializing in Tibetan-style architectural decorative painting,bent over to demonstrate a student how to paint.His left hand steadied the painting board,while his right hand held a brush pen to present the Tibetan-style painting technique of"blurring"-dipping the brush lightly into the pigment,spreading it from dark to light on the paper.The eight-petaled lotus,a symbol of auspiciousness,gradually took shape,blossoming with layers of vitality.
文摘La 28e session de la Conférence des Parties de la Convention-cadre des Nattions unies sur les changements climatiques s'est tenue à Dubaï.Emirats arabes unis,tu 30 novembre au 12 décembre 2023.l'aceàl'urgence du changement climatique.un enjeu mondial.
文摘Lsixieme Exposition internationale des importations de Chine(CIIE)s'est ouverte a Shanghai le 5 novembre,sur le theme<Nouvelle ere,avenir partage>.Le Preésident chinois Xi Jinping a envoye une lettre de felicitations a I'exposition,declarant que la CIE avait apporte une contribution positive a la creation d'un nouveau modele de développement et a la promotion du développement economique mondial.
基金the National“Twelfth-Five Year”Research Program of China under Grant Number 2012BAD39B02.
文摘The excreta of pig is generally utilized to induce pigs to excrete in particular area,which reduces the subsequent work required to clean pens.This paper discussed a new induction device design based on the biological characteristics of pigs.Using different induction materials in the devices,the frequency and location of the excretory behavior of pigs through five treatments and a control group were compared.According to the results,different induction methods had significant(p<0.05)effects on frequency and duration of excretory behavior.Compared to the conventional induction method,the induction devices were significantly(p<0.05)more effective in training pigs to excrete in the assigned area,the most effective material used in the induction devices was feces.If the inductive feces had been preserved in the air for a longer time,the effect of inducing excretory behavior would have been more obvious.Empty devices did not work to induce pigs to excrete in the induction area.
文摘Conversation B Susie:I know.Pencils are also better for drawing.You can make lines lighter or darker.Sam:But you have to sharpen pencils or add lead to them.Susie:You do.But pencils last longer than pens.Pen ink can dry out,but pencil lead doesn’t.Sam:But words look neater when you write in pen.Susie:They do.So,which pen do you want?Sam:One with blue ink,thanks.
文摘一、阅读理解[核心素养·文化意识](2024·贵州铜仁一模) The brush pen, one of the “Four Treasures of the Study”, was invented thou-sands of years ago. However, the oldest pen was just a stick or a piece of bamboo. It was difficult for people to write well on thin silk.
文摘Both the Todo Alphabet written with bambuu pen that is kept by Burintögs Khagai in County Zhaosu and the one written with soft brush that is kept by Namrjil Vjar have distinct characteristics in symbols for vowels,consonants,terminal letters and transcription letters.The two of them fundamentally adhered to the orthography established by Zaya Pandida and most likely were compiled in the transitional phase of the todo script.
基金supported by the National Key R&D Program of China(No.2023YFA1606501)the National Natural Science Foundation of China(Nos.12204110 and 12474251)+2 种基金Shanghai Pujiang Program(No.22PJ1401100)Max-Planck Partner Group Projectthe Fudan University Yan Liyuan-EnSiKai Foundation(JX240003)。
文摘Accurate atomic mass data hold significant application value in various research fields,in which Penning trap mass spectrometry is considered the most precise experimental method.A cryogenic detection system is a key component for reading out the image charge of charged particles in Penning traps using the Fourier transform ion cyclotron resonance technique.In this paper,we present the development and characteristics of this detection system,which includes a superconducting resonator and cryogenic low-noise amplifiers.The resonator consists of delicately woven thin NbTi wires configured into a multilayer helical coil,offering a quality factor of 98004 at around 1 MHz.Low-noise amplifiers are developed based on GaAs field effect transistors,exhibiting amplification factors greater than 27 dB with a power consumption of approximately 6 mW in the frequency range of 0.1 to 10 MHz.The lowest input voltage noise is 0.8√Hz at 1 MHz.The fabrication process,operation,and measurements are elucidated in detail.
