The adsorption of CO_(2) on MgAl layered double hydroxides(MgAl-LDHs) based adsorbents has been an effective way to capture CO_(2),however the adsorption capacity was hampered due to the pore structure and the dispers...The adsorption of CO_(2) on MgAl layered double hydroxides(MgAl-LDHs) based adsorbents has been an effective way to capture CO_(2),however the adsorption capacity was hampered due to the pore structure and the dispersibility of adsorption active sites.To address the problem,we investigate the effect of intercalated anion and alkaline etching time on the structure,morphology and CO_(2) uptake performances of MgAl-LDHs.MgAl-LDHs are synthesized by the onepot hydrothermal method,followed by alkaline etching of NaOH,and characterized by x-ray diffraction,N_(2) adsorption,scanning electron microscopy and Fourier transform infrared spectroscopy.The CO_(2) adsorption tests of the samples are performed on a thermogravimetric analyzer,and the adsorption data are fitted by the first-order,pseudo-second-order and Elovich models,respectively.The results demonstrate that among the three intercalated samples,MgAl(Cl) using chloride salts as precursors possesses the highest adsorption capacity of CO_(2),owing to high crystallinity and porous structure,while MgAl(Ac) employing acetate salts as precursors displays the lowest CO_(2) uptake because of poor crystallinity,disorderly stacked structure and unsatisfactory pore structure.With regard to alkaline etching,the surface of the treated MgAl(Cl) is partly corroded,thus the specific surface area and pore volume increase,which is conducive to the exposure of adsorption active sites.Correspondingly,the adsorption performance of the alkaline-etched adsorbents is significantly improved,and MgAl(Cl)-6 has the highest CO_(2) uptake.With the alkaline etching time further increasing,the CO_(2) adsorption capacity of MgAl(Cl)-9 sharply decreases,mainly due to the collapse of pore structure and the fragmentized sheet-structure.Hence,the CO_(2) adsorption performance is greatly influenced by alkaline etching time,and appropriate alkaline etching time can facilitate the contact between CO_(2) molecules and the adsorbent.展开更多
A hybrid linear amplifier is inserted at the output of the source-in-the-middle distribution protocol to overcome the shortcomings of the transmission distance.The modified protocol aims to maintain a high key rate fo...A hybrid linear amplifier is inserted at the output of the source-in-the-middle distribution protocol to overcome the shortcomings of the transmission distance.The modified protocol aims to maintain a high key rate for long-distance transmission under high noise.It has the potential to significantly broaden the application range of the continuous variable quantum key distribution protocol.The effects of amplifier parameters and noise on the modified protocol are analyzed in detail with regard to applying it to a practical system.To make the simulation more realistic,the effect of finite size on the new protocol is taken into account.It will serve as a guideline for the future use of hybrid linear amplifiers.Different parameters can be adjusted to achieve the best performance for key rates of different quantum channels.展开更多
Objective:Extramammary Paget’s disease(EMPD)is often misdiagnosed as chronic dermatitis or eczema of the scrotum because of its clinical manifestations,leading to delayed diagnosis and treatment.Reflectance confocal ...Objective:Extramammary Paget’s disease(EMPD)is often misdiagnosed as chronic dermatitis or eczema of the scrotum because of its clinical manifestations,leading to delayed diagnosis and treatment.Reflectance confocal microscopy(RCM)and dermoscopy are widely used in clinical practice,enabling early diagnosis and treatment assessment of skin diseases,particularly which are easily misdiagnosed.This study aimed to summarize the RCM and dermoscopic features of EMPD which may provide evidence for diagnosis and evaluation of treatment effects.Methods:A retrospective analysis was conducted on skin lesions from 34 patients diagnosed with EMPD,confirmed through histopathological examination at the dermatology departments of Chengdu Second People’s Hospital and the Japan-China Friendship Hospital between January 2022 and December 2023.The analysis focused on typical changes of lesions,such as blood vessel patterns and background color under dermoscopy,as well as cellular morphology under RCM.Count data were presented as constituent ratios.Results:Among the included 34 patients,28 were male and 6 were female,and 104 skin lesions were identified.The lesions were classified into 3 types:36 red patches,41 dark red erosive patches,and 27 brown pigmented patches.Dermoscopic examination of EMPD revealed characteristic features,including milky-white globules(90.4%,94/104),irregular shiny white streaks(91.3%,95/104),dotted blood vessels(91.3%,95/104),and glomerular-like vessels(88.5%,92/104).RCM demonstrated epidermal structural disorganization(100.0%,104/104),vacuolated cells in the epidermis(94.2%,98/104),and Paget cells,either scattered or clustered(88.5%,92/104).The red macular lesions predominantly contained isolated vacuolated cells in the epidermis,the dark red erosive lesions exhibited Paget cell nests in the basal layer,and the brown pigmented lesions contained numerous dendritic cells.All the patients underwent wide surgical excision followed by RCM and dermoscopic examinations postoperatively.Conclusion:This study identified characteristic dermoscopic and RCM features in patients with EMPD,providing a foundation for noninvasive auxiliary diagnosis and guiding postoperative follow-up.Additionally,RCM characteristics of different lesion morphologies can help physicians more accurately assess surgical margins,leading to more precise surgical treatment options.展开更多
Introduction Viral encephalitis caused by varicella zoster virus (VZV)mainly occurs in immunocompromised individuals and patients with VZV infection in the brain or nerves of the cervical or upper thoracic spinal cord...Introduction Viral encephalitis caused by varicella zoster virus (VZV)mainly occurs in immunocompromised individuals and patients with VZV infection in the brain or nerves of the cervical or upper thoracic spinal cord.However,viral encephalitis caused by VZV affecting distant body parts,such as herpes zoster of the waist and abdomen,is rare.How herpes zoster virus reaches the central nervous system (CNS) is unclear.We herein present an atypical case of waist and abdomen herpes zoster infection that progressed to the CNS in a 48-year-old healthy,immunocompetent patient without brain magnetic resonance imaging (MRI) abnormalities,and may enrich the knowledge of viral encephalitis caused by herpes zoster.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.21606058)the Natural Science Foundation of Guangxi,China(Grant Nos.2017GXNSFBA198193 and 2017GXNSFBA198124)the Startup Foundation for Doctors of Guilin University of Technology(Grant No.GLUTQD2015008)。
文摘The adsorption of CO_(2) on MgAl layered double hydroxides(MgAl-LDHs) based adsorbents has been an effective way to capture CO_(2),however the adsorption capacity was hampered due to the pore structure and the dispersibility of adsorption active sites.To address the problem,we investigate the effect of intercalated anion and alkaline etching time on the structure,morphology and CO_(2) uptake performances of MgAl-LDHs.MgAl-LDHs are synthesized by the onepot hydrothermal method,followed by alkaline etching of NaOH,and characterized by x-ray diffraction,N_(2) adsorption,scanning electron microscopy and Fourier transform infrared spectroscopy.The CO_(2) adsorption tests of the samples are performed on a thermogravimetric analyzer,and the adsorption data are fitted by the first-order,pseudo-second-order and Elovich models,respectively.The results demonstrate that among the three intercalated samples,MgAl(Cl) using chloride salts as precursors possesses the highest adsorption capacity of CO_(2),owing to high crystallinity and porous structure,while MgAl(Ac) employing acetate salts as precursors displays the lowest CO_(2) uptake because of poor crystallinity,disorderly stacked structure and unsatisfactory pore structure.With regard to alkaline etching,the surface of the treated MgAl(Cl) is partly corroded,thus the specific surface area and pore volume increase,which is conducive to the exposure of adsorption active sites.Correspondingly,the adsorption performance of the alkaline-etched adsorbents is significantly improved,and MgAl(Cl)-6 has the highest CO_(2) uptake.With the alkaline etching time further increasing,the CO_(2) adsorption capacity of MgAl(Cl)-9 sharply decreases,mainly due to the collapse of pore structure and the fragmentized sheet-structure.Hence,the CO_(2) adsorption performance is greatly influenced by alkaline etching time,and appropriate alkaline etching time can facilitate the contact between CO_(2) molecules and the adsorbent.
基金Project supported by the National Natural Science Foundation of China(Grant No.62201620)the Outstanding Youth Program of Education Department of Hunan(Grant No.21B0228)+2 种基金Changsha Municipal Natural Science Foundation(Grant No.kq2202293)Hunan Students’Platform for innovation and entrepreneurship training program(Grant No.S202210538069)the Research Fund of Central South University of Forestry and Technology(Grant No.1121001703).
文摘A hybrid linear amplifier is inserted at the output of the source-in-the-middle distribution protocol to overcome the shortcomings of the transmission distance.The modified protocol aims to maintain a high key rate for long-distance transmission under high noise.It has the potential to significantly broaden the application range of the continuous variable quantum key distribution protocol.The effects of amplifier parameters and noise on the modified protocol are analyzed in detail with regard to applying it to a practical system.To make the simulation more realistic,the effect of finite size on the new protocol is taken into account.It will serve as a guideline for the future use of hybrid linear amplifiers.Different parameters can be adjusted to achieve the best performance for key rates of different quantum channels.
基金supported by the National Natural Science Foundation of China Youth Project(No.82103100)the Chengdu Municipal Health Commission Research Project(No.2021201).
文摘Objective:Extramammary Paget’s disease(EMPD)is often misdiagnosed as chronic dermatitis or eczema of the scrotum because of its clinical manifestations,leading to delayed diagnosis and treatment.Reflectance confocal microscopy(RCM)and dermoscopy are widely used in clinical practice,enabling early diagnosis and treatment assessment of skin diseases,particularly which are easily misdiagnosed.This study aimed to summarize the RCM and dermoscopic features of EMPD which may provide evidence for diagnosis and evaluation of treatment effects.Methods:A retrospective analysis was conducted on skin lesions from 34 patients diagnosed with EMPD,confirmed through histopathological examination at the dermatology departments of Chengdu Second People’s Hospital and the Japan-China Friendship Hospital between January 2022 and December 2023.The analysis focused on typical changes of lesions,such as blood vessel patterns and background color under dermoscopy,as well as cellular morphology under RCM.Count data were presented as constituent ratios.Results:Among the included 34 patients,28 were male and 6 were female,and 104 skin lesions were identified.The lesions were classified into 3 types:36 red patches,41 dark red erosive patches,and 27 brown pigmented patches.Dermoscopic examination of EMPD revealed characteristic features,including milky-white globules(90.4%,94/104),irregular shiny white streaks(91.3%,95/104),dotted blood vessels(91.3%,95/104),and glomerular-like vessels(88.5%,92/104).RCM demonstrated epidermal structural disorganization(100.0%,104/104),vacuolated cells in the epidermis(94.2%,98/104),and Paget cells,either scattered or clustered(88.5%,92/104).The red macular lesions predominantly contained isolated vacuolated cells in the epidermis,the dark red erosive lesions exhibited Paget cell nests in the basal layer,and the brown pigmented lesions contained numerous dendritic cells.All the patients underwent wide surgical excision followed by RCM and dermoscopic examinations postoperatively.Conclusion:This study identified characteristic dermoscopic and RCM features in patients with EMPD,providing a foundation for noninvasive auxiliary diagnosis and guiding postoperative follow-up.Additionally,RCM characteristics of different lesion morphologies can help physicians more accurately assess surgical margins,leading to more precise surgical treatment options.
基金supported by the National Natural Science Foundation of China (No. 81660514)the Xinjiang Uygur Autonomous Region Natural Science Foundation (No. 2016D01C102)
文摘Introduction Viral encephalitis caused by varicella zoster virus (VZV)mainly occurs in immunocompromised individuals and patients with VZV infection in the brain or nerves of the cervical or upper thoracic spinal cord.However,viral encephalitis caused by VZV affecting distant body parts,such as herpes zoster of the waist and abdomen,is rare.How herpes zoster virus reaches the central nervous system (CNS) is unclear.We herein present an atypical case of waist and abdomen herpes zoster infection that progressed to the CNS in a 48-year-old healthy,immunocompetent patient without brain magnetic resonance imaging (MRI) abnormalities,and may enrich the knowledge of viral encephalitis caused by herpes zoster.
