Owing to the utilization of lithium metal as anode with the ultrahigh theoretical capacity density of 3860 mA h g^(-1)and oxide-based ceramic solid-state electrolytes(SE),e.g.,garnet-type Li7La_(3)Zr_(2)O_(12)(LLZO),a...Owing to the utilization of lithium metal as anode with the ultrahigh theoretical capacity density of 3860 mA h g^(-1)and oxide-based ceramic solid-state electrolytes(SE),e.g.,garnet-type Li7La_(3)Zr_(2)O_(12)(LLZO),all-state-state lithium metal batteries(ASLMBs)have been widely accepted as the promising alternatives for providing the satisfactory energy density and safety.However,its applications are still challenged by plenty of technical and scientific issues.In this contribution,the co-sintering temperature at 500℃is proved as a compromise method to fabricate the composite cathode with structural integrity and declined capacity fading of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM).On the other hand,it tends to form weaker grain boundary(GB)inside polycrystalline LLZO at inadequate sintering temperature for LLZO,which can induce the intergranular failure of SE during the growth of Li filament inside the unavoidable defect on the interface of SE.Therefore,increasing the strength of GB,refining the grain to 0.4μm,and precluding the interfacial defect are suggested to postpone the electro-chemo-mechanical failure of SE with weak GB.Moreover,the advanced sintering techniques to lower the co-sintering temperature for both NCM-LLZO composite cathode and LLZO SE can be posted out to realize the viability of state-of-the-art ASLMBs with higher energy density as well as the guaranteed safety.展开更多
Tin(IV)oxide(Sn_(3)O_(4))is layered tin and exhibits mixed valence states.It has emerged as a highly promising visible-light pho-tocatalyst,attracting considerable attention.This comprehensive review is aimed at provi...Tin(IV)oxide(Sn_(3)O_(4))is layered tin and exhibits mixed valence states.It has emerged as a highly promising visible-light pho-tocatalyst,attracting considerable attention.This comprehensive review is aimed at providing a detailed overview of the latest advance-ments in research,applications,advantages,and challenges associated with Sn_(3)O_(4)photocatalytic nanomaterials.The fundamental con-cepts and principles of Sn_(3)O_(4)are introduced.Sn_(3)O_(4)possesses a unique crystal structure and optoelectronic properties that allow it to ab-sorb visible light efficiently and generate photoexcited charge carriers that drive photocatalytic reactions.Subsequently,strategies for the control and improved performance of Sn_(3)O_(4)photocatalytic nanomaterials are discussed.Morphology control,ion doping,and hetero-structure construction are widely employed in the optimization of the photocatalytic performance of Sn_(3)O_(4)materials.The effective imple-mentation of these strategies improves the photocatalytic activity and stability of Sn_(3)O_(4)nanomaterials.Furthermore,the review explores the diverse applications of Sn_(3)O_(4)photocatalytic nanomaterials in various fields,such as photocatalytic degradation,photocatalytic hydro-gen production,photocatalytic reduction of carbon dioxide,solar cells,photocatalytic sterilization,and optoelectronic sensors.The discus-sion focuses on the potential of Sn_(3)O_(4)-based nanomaterials in these applications,highlighting their unique attributes and functionalities.Finally,the review provides an outlook on the future development directions in the field and offers guidance for the exploration and de-velopment of novel and efficient Sn_(3)O_(4)-based nanomaterials.Through the identification of emerging research areas and potential avenues for improvement,this review aims to stimulate further advancements in Sn_(3)O_(4)-based photocatalysis and facilitate the translation of this promising technology into practical applications.展开更多
See related article,pp 357-363Extensive neuronal cell death occurs during nervous system development to remove surplus,unwanted,and damaged cells.This is a highly regulated physiological process that plays a pivotal r...See related article,pp 357-363Extensive neuronal cell death occurs during nervous system development to remove surplus,unwanted,and damaged cells.This is a highly regulated physiological process that plays a pivotal role in nervous system homeostasis and normal development.In some brain regions,more than half of the neurons are removed during normal development without interfering with the remaining cells.This gene-regulated neuronal cell deletion process is called programmed cell death(Fricker et al.,2018).展开更多
利用无线通讯网络中的微波链路来监测降雨和水汽等是大气环境监测的新技术之一。这个技术可以测量近地面的降雨强度和水汽密度等气象参数,具有时空分辨率高、成本低等优势。利用瑞典爱立信公司(Ericsson)提供的位于哥德堡地区E频段的微...利用无线通讯网络中的微波链路来监测降雨和水汽等是大气环境监测的新技术之一。这个技术可以测量近地面的降雨强度和水汽密度等气象参数,具有时空分辨率高、成本低等优势。利用瑞典爱立信公司(Ericsson)提供的位于哥德堡地区E频段的微波通讯链路资料、位于链路一端的气象站1资料和由瑞典气象水文研究所(SMHI)气象网站提供的气象站2资料,对2017年06月13日至2017年07月13日近1个月的水汽密度进行反演计算和分析。结果表明:同一区域的不同地点处的气象要素有一定的差异性,同一区域的温度会有一定的浮动(0~4℃),两者之间的相关性为0. 87;微波通讯链路反演的水汽密度结果与研究区域的地面气象站1和气象站2测量结果有很好的一致性,两者之间的相关性分别为0. 89和0. 97,均方根误分别差为0. 75 g m3和0. 79 g m3;利用微波链路,与现有的湿度监测方法相比,可以为现有的天气监测网络提供额外的丰富的数据源。展开更多
Duodenal ulcer (DU) can be developed viaseveral different mechanisms.Hypersecretion ofgastric acid is,however,a common denominator.Amassive hypersecretion of acid can by itself evoke aDU,e.g.in the Zollinger-Ellison s...Duodenal ulcer (DU) can be developed viaseveral different mechanisms.Hypersecretion ofgastric acid is,however,a common denominator.Amassive hypersecretion of acid can by itself evoke aDU,e.g.in the Zollinger-Ellison syndrome.Irrespective of the mechanism behind thedevelopment of a DU,powerful antisecretorytreatment will heal the ulcer and preventrecurrence.展开更多
The main goal of the treatment of patients with periodontitis is to establish adequate infection control. To satisfy demands for acceptable aesthetics and chewing function with good long-term prognosis in patients wit...The main goal of the treatment of patients with periodontitis is to establish adequate infection control. To satisfy demands for acceptable aesthetics and chewing function with good long-term prognosis in patients with periodontitis requires the establishment of adequate infection control. Pocket instrumentation (scaling and root planing with or without flap elevation), combined with effective self-performed supragingival plaque control measures, constitutes the basic treatment modalities.展开更多
AIM: To elucidate the differences in somatic, psycho-logical and biochemical pattern between the subtypes of irritable bowel syndrome (IBS). METHODS: Eighty IBS patients, 30 diarrhoea pre-dominant (D-IBS), 16 constipa...AIM: To elucidate the differences in somatic, psycho-logical and biochemical pattern between the subtypes of irritable bowel syndrome (IBS). METHODS: Eighty IBS patients, 30 diarrhoea pre-dominant (D-IBS), 16 constipation predominant (C-IBS) and 34 alternating IBS (A-IBS) underwent physi-otherapeutic examinations for dysfunctions in body movements and awareness and were compared to an apparently healthy control group (AHC). All groups an-swered questionnaires for gastrointestinal and psycho-logical symptoms. Biochemical variables were analysed in blood. RESULTS: The D-IBS group showed less body aware-ness, less psychological symptoms, a more normal sense of coherence and psychosocial rating as well as higher C-peptide values. C-IBS had a higher degree of body dysfunction and psychological symptoms, as well as the lowest sense of coherence compared to controls and D-IBS. They also demonstrated the most elevated prolactin levels. A-IBS had the lowest degree of body disturbance, deteriorated quality of life and affected bi-ochemical pattern. All subtypes had higher pain scores compared to controls. In addition they all had signifi -cantly increased triglycerides and elevated morning cortisol levels, however, without statistical signifi cance compared with the controls.CONCLUSION: IBS subtypes showed different pro-files in body awareness, somatic and psychological symptoms and in biochemical variables. D-IBS differed compared to the other groups by lowered body aware-ness, less psychological symptoms and a higher sense of coherence and elevated C-peptide values. C-IBS and A-IBS subtypes suffered more from depression and anxiety, associated with a lower quality of life. These differences may be important and will be taken into account in our treatment of these patients.展开更多
AIM:To study the serum concentration of IL-1β,IL-1receptor antagonist(IL-1Ra)and IL-18 in Gαi2-deficientmice at the age of 6(healthy),12(pre-colitic)and 24 wk(colitic)and in healthy control mice.METHODS:At the time ...AIM:To study the serum concentration of IL-1β,IL-1receptor antagonist(IL-1Ra)and IL-18 in Gαi2-deficientmice at the age of 6(healthy),12(pre-colitic)and 24 wk(colitic)and in healthy control mice.METHODS:At the time of killing,serum sampleswere collected and IL-1β,IL-1Ra and IL-18 levels weremeasured using enzyme-linked immunosorbent assays.RESULTS:Serum concentration of IL-1Ra wassignifcantly increased in pre-colitic(median:524 ng/L;P=0.02)and colitic(450 ng/L;P=0.01),but not inhealthy(196 ng/L)Gαi2-deficient mice as compared withcontrols(217 ng/L).Serum concentrations of IL-1β didnot differ between Gαi2-deficient mice and their controls,irrespective of age,IL-18 was significantly increased incolitic,but not in pre-colitic mice compared with controls(510 ng/L vs 190 ng/L;P=0.05).CONCLUSION:The increased serum concentrations ofIL-18 and IL-1Ra in established diseases are suggestedas markers of ongoing colitis.Interestingly,thesignificantly increased serum concentration of IL-1Ra inpre-colitic mice is found to be an early marker of diseaseprogression.展开更多
AIM: To compare irritable bowel syndrome (IBS) pa- tients with apparently healthy persons and to evaluate body awareness therapy, which is a physiotherapeutic remedy focusing on normalising tensions in the body, for t...AIM: To compare irritable bowel syndrome (IBS) pa- tients with apparently healthy persons and to evaluate body awareness therapy, which is a physiotherapeutic remedy focusing on normalising tensions in the body, for the treatment of IBS with the hypothesis that altered body tension is associated with the syndrome. METHODS: Twenty-one IBS patients received body awareness therapy two hours weekly for 24 wk. At base- line as well as after 12 and 24 wk, they underwent ex- aminations including resource oriented body examination in combination with body awareness scale evaluation and f illed in gastrointestinal and psychological symptom questionnaires. Saliva cortisol was analysed. A group of 21 apparently healthy persons underwent the same ex- aminations once. RESULTS: Compared to the apparently healthy group, IBS patients scored higher at baseline for gastrointestinal and psychological symptoms. They showed more often alterations in normal body tension patterns, as well as deviating cortisol slopes in saliva. After 24 wk of body awareness therapy, their gastrointestinal and psychologi- cal symptoms were reduced overall. Somatic symptoms decreased in parallel with depressive symptoms. Whole body pain score decreased, coping ability as well as bio- chemical stress markers improved. CONCLUSION: IBS patients scored higher for gastroin- testinal and psychological symptoms, and presented with altered biochemical stress markers. Their body tension deviated compared to healthy controls. Furthermore,body awareness therapy gave relief of both somatic com- plaints, psychological symptoms and normalised body tension. These findings indicate that distorted tension constitutes an important part of the symptoms in IBS.展开更多
Objectives: We assessed the risk of adverse cardiovascular(CV) outcomes associated with atrial fibrillation(AF) in the Candesartan in Heart failure-Assessment of Reduction in Mortality and morbidity(CHARM) program, wh...Objectives: We assessed the risk of adverse cardiovascular(CV) outcomes associated with atrial fibrillation(AF) in the Candesartan in Heart failure-Assessment of Reduction in Mortality and morbidity(CHARM) program, which enrolled patients with chronic heart failure(CHF) and a broad range of ejection fractions(EFs). Background: Atrial fibrillation is associated with an increased risk of adverse CV outcomes in patients with CHF and reduced EF. The risk of AF in patients with CHF and preserved left ventricular ejection fraction(PEF) is unknown. Methods: A total of 7,599 patients with symptomatic CHF were randomized to candesartan or placebo. Patients were divided by baseline EF(≤40%or >40%) in low or preserved EF groups. Major outcomes were cardiovascular death or hospitalization for worsening heart failure, and all cause mortality. Median follow-up was 37.7 months. Results: A total of 670(17%) patients in the low EF group and 478(19%) in the PEF group had AF at baseline. Atrial fibrillation predicted a high risk of cardiovascular morbidity and mortality regardless of baseline EF. Patients with AF and low EF had the highest absolute risk for adverse CV outcomes. However, AF was associated with greater relative increased risk of the major outcomes in patients with PEF than in patients with low EF: hazard ratio 1.72(95%confidence interval[CI] 1.45 to 2.06)versus 1.29(95%CI 1.14 to 1.46), respectively. The same was true for the risk of all-cause mortality. Candesartan was associated with similar treatment effects regardless of baseline rhythm. Conclusions: Atrial fibrillation is associated with an increased risk of CV outcomes in patients with CHF and either reduced EF or PEF. Candesartan improved outcomes similarly regardless of baseline rhythm.展开更多
Intrapartum maternal normoglycemia seems to play an important role in the prevention of adverse perinatal, maternal and neonatal outcomes. Several glucose monitoring protocols have been developed, aiming to achieve a ...Intrapartum maternal normoglycemia seems to play an important role in the prevention of adverse perinatal, maternal and neonatal outcomes. Several glucose monitoring protocols have been developed, aiming to achieve a tight glucose monitoring and control. Depending on the type of diabetes and the optimal or suboptimal glycemic control, the treatment options include fasting status of the parturient, frequent monitoring of capillary blood glucose, intravenous dextrose infusion and subcutaneous or intravenous use of insulin. Continuous glucose monitoring system(CGMS) is a relatively new technology that measures interstitial glucose at very short time intervals over a specifi c period of time. The resulting profi le provides a more comprehensive measure of glycemic excursions than intermittent home blood glucose monitoring. Results of studies applying the CGMS technology in patients with or without diabetes mellitus(DM) have revealed new insights in glucose metabolism. Moreover, CGMS have a potential role in the improvement of glycemic control during pregnancy and labor, which may lead to a decrease in perinatal morbidity and mortality. In conclusion, the use of CGMS, with its important technical advantages compared to the conventional way of monitoring, may lead into a more etiological intrapartum management of both the mother and her fetus/infant in pregnancies complicated with DM.展开更多
The effect of different kinds of cap layers on optical property of InAs quantum dots (QDs) on GaAs (100) substrate was studied. Temperature dependent photoluminescence (PL) indicates that the PL integrated inten...The effect of different kinds of cap layers on optical property of InAs quantum dots (QDs) on GaAs (100) substrate was studied. Temperature dependent photoluminescence (PL) indicates that the PL integrated intensity from the ground state of InAs QDs capped with an intermediate InAIAs layer drops very little as compared to QDs capped with a thin InGaAs or GaAs cap layer from 15 K up to room temperature. PL integrated intensity ratio of the first excited to ground states for InAs QDs capped with an intermediate InAIAs layer is unexpectedly decreased with increasing temperature, which are attributed to phonon bottleneck effect. A virtual barrier is proposed to describe this physics process and shows good agreement with experimental results when fitting the curve with the value of the virtual barrier 30 meV.展开更多
Aim: 1) To assess the reliability and validity of the Swedish version of the Child Health Questionnaire (CHQ), 2) to determine the correlation between children’ s and parents’ responses to the CHQ, and 3) to describ...Aim: 1) To assess the reliability and validity of the Swedish version of the Child Health Questionnaire (CHQ), 2) to determine the correlation between children’ s and parents’ responses to the CHQ, and 3) to describe and compare responses to the CHQ of four diagnostic groups. Methods: A total of 199 Swedish children aged 9- 16 with diagnoses of asthma (n = 53), diabetes (n = 48), short stature (n = 51) and juvenile chronic arthritis (JCA, n = 47) and their parents answered the CHQ and relevant validation instruments at a clinic check- up. Coefficient alphas were determined for all dimensions of the instrument, and all but four had acceptable to very good reliability (0.75- 0.94). Results: Concerning construct validity, the CHQ correlated significantly with appropriate dimensions of the validation instruments. In general, there were significant correlations between the children’ s and parents’ responses. Comparisons between the diagnostic groups showed several significant differences. The short stature group had the highest quality of life and the JCA group the lowest. There were no sex differences, but children who had not reached puberty scored better on the dimensions of mental health and self- esteem. Conclusion: The Swedish version of the CHQ is a reliable and valid instrument. Furthermore, it is recommended to ask children themselves about their healthrelated quality of life.展开更多
Background &Aims: Gain-of-function mutations in the KIT receptor tyrosine kinase gene and rare mutations in the platelet derived growth factor receptor α(PDGFRA) gene are important events in gastrointestinal stro...Background &Aims: Gain-of-function mutations in the KIT receptor tyrosine kinase gene and rare mutations in the platelet derived growth factor receptor α(PDGFRA) gene are important events in gastrointestinal stromal tumor (GIST) development. Different mutations are reportedly associated with distinctive phenotypes and possibly clinical behavior. We investigated the correlation among mutation type, phenotype, and clinical course in a preimatinib, population-based series of GIST with long-term follow-up. Methods: Genomic DNA from 177 GIST patients was analyzed for KIT exons 9, 11, 13, and 17 and PDGFRA exons 12 and 18 mutations using denaturating high-performance liquid chromatography and bidirectional sequencing. Results:KIT exon 11 mutations were detected in 101 of 177 GIST (61 deletions, 23 missense mutations, and 17 duplications); wild-type (WT) KIT and PDGFRA were detected in 63; KIT exon 9 and exon 17 mutations in 6 and 1, respectively; and PDGFRA exons 12 and 18 mutations in 3 each. GIST >5 cm vs GIST ≤1 cm had mutations in 73%and 33%, respectively. KIT exon 11 deletions were significantly associated with a higher proportion of high risk or overtly malignant groups compared with WT GIST.KIT exon 11 deletions adversely affected outcome. KIT exon 11 duplications and exon 9 mutations were found exclusively in gastric and small intestinal GIST, respectively. Conclusions: KIT exon 11 deletion is an independent adverse prognostic factor in patients with GIST.展开更多
IGF- I is important for somatic growth and development of the human fetus an d neonate. IGF- I also plays an important role in normal vascularization of hum an retina, as it has been suggested that insufficient IGF- I...IGF- I is important for somatic growth and development of the human fetus an d neonate. IGF- I also plays an important role in normal vascularization of hum an retina, as it has been suggested that insufficient IGF- I may be a factor in the development of retinopathy of prematurity. The principal regulator of the b ioavailability of IGF- I in the circulation is IGF binding protein 3 (IGFBP- 3 ). The aim of this study was to study factors associated with postnatal serum co ncentrations of IGF- I and of IGFBP- 3 in preterm infants from birth to an age corresponding to 40 wk postmenstruation. We conducted a prospective, longitudin al study in which we measured serum IGF- I and IGFBP- 3 concentrations in 76 p reterm infants from birth (postmenstrual ages 23- 32 wk) until discharge from h ospital around 40 wk. Information regarding nutrition, weight gain, maternal fac tors, and treatment with corticosteroids were collected weekly. Variables found to be associated with postnatal change over time of serum IGF- I and IGFBP- 3 were postmenstrual age (p < 0.001), weight gain (standard deviation score) (p < 0.001), and enteral intake of protein (p < 0.001). Male gender was associated wi th lower IGF- I levels (p < 0.001). The relationship between protein intake and IGF- I (and also between protein intake and IGFBP- 3) was positive, as was th e relationship between weight gain and IGF- I (and between weight gain and IGFB P- 3). These results indicate that the degree of prematurity, low enteral prote in intake, male gender, and slow weight gain are associated with a slower postna tal increase of IGF- I in preterm infants.展开更多
The modern Western lifestyle may have altered the composition of the commensal microflora. Here,we investigated the first year’s intestinal colonization pattern in 99 vaginally delivered Swedish infants and 17 delive...The modern Western lifestyle may have altered the composition of the commensal microflora. Here,we investigated the first year’s intestinal colonization pattern in 99 vaginally delivered Swedish infants and 17 delivered by cesarean section. Rectal swabs obtained at 3 d of age were cultured for aerobic bacteria and fecal samples obtained at 1,2,4,and 8 wk and at 6 and 12 mo of age were cultivated quantitatively for aerobic and anaerobic bacteria. Vaginally delivered infants more often had Escherichia coli compared with cesarean section-delivered infants,whereas the latter more frequently earned other enterobacteria,such as Klebsiella and Enterobacter. Independent of delivery mode,it took 2 mo until most infants were colonized by enterobacteria,traditionally the first colonizers. In contrast,coagulase-negative staphylococci colonized 99%of the infants from d 3 onwards. The poor adaptation of staphylococci to the gut was shown by declining population sizes after some weeks. Dominating anaerobes were initially bifidobacteria and clostridia,whereas Bacteroides initially colonized only 30%of vaginally delivered infants and increased very slowly in prevalence. Bacteroides colonization was delayed up to 1 y in cesarean section-delivered compared with vaginally delivered infants. Our results show that some “traditional”fecal bacteria are acquired late today especially in cesarean section-delivered infants,probably due to limited environmental circulation. In their absence,skin bacteria like staphylococci have become the first gut colonizers.展开更多
基金the National Natural Science Foundation of China(12102328)for supporting this work。
文摘Owing to the utilization of lithium metal as anode with the ultrahigh theoretical capacity density of 3860 mA h g^(-1)and oxide-based ceramic solid-state electrolytes(SE),e.g.,garnet-type Li7La_(3)Zr_(2)O_(12)(LLZO),all-state-state lithium metal batteries(ASLMBs)have been widely accepted as the promising alternatives for providing the satisfactory energy density and safety.However,its applications are still challenged by plenty of technical and scientific issues.In this contribution,the co-sintering temperature at 500℃is proved as a compromise method to fabricate the composite cathode with structural integrity and declined capacity fading of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM).On the other hand,it tends to form weaker grain boundary(GB)inside polycrystalline LLZO at inadequate sintering temperature for LLZO,which can induce the intergranular failure of SE during the growth of Li filament inside the unavoidable defect on the interface of SE.Therefore,increasing the strength of GB,refining the grain to 0.4μm,and precluding the interfacial defect are suggested to postpone the electro-chemo-mechanical failure of SE with weak GB.Moreover,the advanced sintering techniques to lower the co-sintering temperature for both NCM-LLZO composite cathode and LLZO SE can be posted out to realize the viability of state-of-the-art ASLMBs with higher energy density as well as the guaranteed safety.
基金the National Natural Science Foundation of China(No.52272212)the Natural Science Foundation of Shandong Province(Nos.ZR2022JQ20 and ZR2023MB126)+2 种基金the Taishan Scholar Project of Shandong Province(No.tsqn202211168)the Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science,MOE(No.M2022-7)the STIEI scientific research funding project(No.GCC2023036).
文摘Tin(IV)oxide(Sn_(3)O_(4))is layered tin and exhibits mixed valence states.It has emerged as a highly promising visible-light pho-tocatalyst,attracting considerable attention.This comprehensive review is aimed at providing a detailed overview of the latest advance-ments in research,applications,advantages,and challenges associated with Sn_(3)O_(4)photocatalytic nanomaterials.The fundamental con-cepts and principles of Sn_(3)O_(4)are introduced.Sn_(3)O_(4)possesses a unique crystal structure and optoelectronic properties that allow it to ab-sorb visible light efficiently and generate photoexcited charge carriers that drive photocatalytic reactions.Subsequently,strategies for the control and improved performance of Sn_(3)O_(4)photocatalytic nanomaterials are discussed.Morphology control,ion doping,and hetero-structure construction are widely employed in the optimization of the photocatalytic performance of Sn_(3)O_(4)materials.The effective imple-mentation of these strategies improves the photocatalytic activity and stability of Sn_(3)O_(4)nanomaterials.Furthermore,the review explores the diverse applications of Sn_(3)O_(4)photocatalytic nanomaterials in various fields,such as photocatalytic degradation,photocatalytic hydro-gen production,photocatalytic reduction of carbon dioxide,solar cells,photocatalytic sterilization,and optoelectronic sensors.The discus-sion focuses on the potential of Sn_(3)O_(4)-based nanomaterials in these applications,highlighting their unique attributes and functionalities.Finally,the review provides an outlook on the future development directions in the field and offers guidance for the exploration and de-velopment of novel and efficient Sn_(3)O_(4)-based nanomaterials.Through the identification of emerging research areas and potential avenues for improvement,this review aims to stimulate further advancements in Sn_(3)O_(4)-based photocatalysis and facilitate the translation of this promising technology into practical applications.
基金supported by the National Nature Science Foundation of China(81901335 to YS,U21A20347 to CZ)China Postdoctoral Science Foundation(2020M672288 to YS)Henan Postdoctoral Research Grant(201902007 to YS)。
文摘See related article,pp 357-363Extensive neuronal cell death occurs during nervous system development to remove surplus,unwanted,and damaged cells.This is a highly regulated physiological process that plays a pivotal role in nervous system homeostasis and normal development.In some brain regions,more than half of the neurons are removed during normal development without interfering with the remaining cells.This gene-regulated neuronal cell deletion process is called programmed cell death(Fricker et al.,2018).
文摘利用无线通讯网络中的微波链路来监测降雨和水汽等是大气环境监测的新技术之一。这个技术可以测量近地面的降雨强度和水汽密度等气象参数,具有时空分辨率高、成本低等优势。利用瑞典爱立信公司(Ericsson)提供的位于哥德堡地区E频段的微波通讯链路资料、位于链路一端的气象站1资料和由瑞典气象水文研究所(SMHI)气象网站提供的气象站2资料,对2017年06月13日至2017年07月13日近1个月的水汽密度进行反演计算和分析。结果表明:同一区域的不同地点处的气象要素有一定的差异性,同一区域的温度会有一定的浮动(0~4℃),两者之间的相关性为0. 87;微波通讯链路反演的水汽密度结果与研究区域的地面气象站1和气象站2测量结果有很好的一致性,两者之间的相关性分别为0. 89和0. 97,均方根误分别差为0. 75 g m3和0. 79 g m3;利用微波链路,与现有的湿度监测方法相比,可以为现有的天气监测网络提供额外的丰富的数据源。
文摘Duodenal ulcer (DU) can be developed viaseveral different mechanisms.Hypersecretion ofgastric acid is,however,a common denominator.Amassive hypersecretion of acid can by itself evoke aDU,e.g.in the Zollinger-Ellison syndrome.Irrespective of the mechanism behind thedevelopment of a DU,powerful antisecretorytreatment will heal the ulcer and preventrecurrence.
文摘The main goal of the treatment of patients with periodontitis is to establish adequate infection control. To satisfy demands for acceptable aesthetics and chewing function with good long-term prognosis in patients with periodontitis requires the establishment of adequate infection control. Pocket instrumentation (scaling and root planing with or without flap elevation), combined with effective self-performed supragingival plaque control measures, constitutes the basic treatment modalities.
基金Grants from the University of Gothenburg, Sweden
文摘AIM: To elucidate the differences in somatic, psycho-logical and biochemical pattern between the subtypes of irritable bowel syndrome (IBS). METHODS: Eighty IBS patients, 30 diarrhoea pre-dominant (D-IBS), 16 constipation predominant (C-IBS) and 34 alternating IBS (A-IBS) underwent physi-otherapeutic examinations for dysfunctions in body movements and awareness and were compared to an apparently healthy control group (AHC). All groups an-swered questionnaires for gastrointestinal and psycho-logical symptoms. Biochemical variables were analysed in blood. RESULTS: The D-IBS group showed less body aware-ness, less psychological symptoms, a more normal sense of coherence and psychosocial rating as well as higher C-peptide values. C-IBS had a higher degree of body dysfunction and psychological symptoms, as well as the lowest sense of coherence compared to controls and D-IBS. They also demonstrated the most elevated prolactin levels. A-IBS had the lowest degree of body disturbance, deteriorated quality of life and affected bi-ochemical pattern. All subtypes had higher pain scores compared to controls. In addition they all had signifi -cantly increased triglycerides and elevated morning cortisol levels, however, without statistical signifi cance compared with the controls.CONCLUSION: IBS subtypes showed different pro-files in body awareness, somatic and psychological symptoms and in biochemical variables. D-IBS differed compared to the other groups by lowered body aware-ness, less psychological symptoms and a higher sense of coherence and elevated C-peptide values. C-IBS and A-IBS subtypes suffered more from depression and anxiety, associated with a lower quality of life. These differences may be important and will be taken into account in our treatment of these patients.
文摘AIM:To study the serum concentration of IL-1β,IL-1receptor antagonist(IL-1Ra)and IL-18 in Gαi2-deficientmice at the age of 6(healthy),12(pre-colitic)and 24 wk(colitic)and in healthy control mice.METHODS:At the time of killing,serum sampleswere collected and IL-1β,IL-1Ra and IL-18 levels weremeasured using enzyme-linked immunosorbent assays.RESULTS:Serum concentration of IL-1Ra wassignifcantly increased in pre-colitic(median:524 ng/L;P=0.02)and colitic(450 ng/L;P=0.01),but not inhealthy(196 ng/L)Gαi2-deficient mice as compared withcontrols(217 ng/L).Serum concentrations of IL-1β didnot differ between Gαi2-deficient mice and their controls,irrespective of age,IL-18 was significantly increased incolitic,but not in pre-colitic mice compared with controls(510 ng/L vs 190 ng/L;P=0.05).CONCLUSION:The increased serum concentrations ofIL-18 and IL-1Ra in established diseases are suggestedas markers of ongoing colitis.Interestingly,thesignificantly increased serum concentration of IL-1Ra inpre-colitic mice is found to be an early marker of diseaseprogression.
基金Supported by grants from Vstra Gtalandsregionen (proj No 07), Dagmar (proj No 643-2000-19) and the University of Gothenburg, Sweden
文摘AIM: To compare irritable bowel syndrome (IBS) pa- tients with apparently healthy persons and to evaluate body awareness therapy, which is a physiotherapeutic remedy focusing on normalising tensions in the body, for the treatment of IBS with the hypothesis that altered body tension is associated with the syndrome. METHODS: Twenty-one IBS patients received body awareness therapy two hours weekly for 24 wk. At base- line as well as after 12 and 24 wk, they underwent ex- aminations including resource oriented body examination in combination with body awareness scale evaluation and f illed in gastrointestinal and psychological symptom questionnaires. Saliva cortisol was analysed. A group of 21 apparently healthy persons underwent the same ex- aminations once. RESULTS: Compared to the apparently healthy group, IBS patients scored higher at baseline for gastrointestinal and psychological symptoms. They showed more often alterations in normal body tension patterns, as well as deviating cortisol slopes in saliva. After 24 wk of body awareness therapy, their gastrointestinal and psychologi- cal symptoms were reduced overall. Somatic symptoms decreased in parallel with depressive symptoms. Whole body pain score decreased, coping ability as well as bio- chemical stress markers improved. CONCLUSION: IBS patients scored higher for gastroin- testinal and psychological symptoms, and presented with altered biochemical stress markers. Their body tension deviated compared to healthy controls. Furthermore,body awareness therapy gave relief of both somatic com- plaints, psychological symptoms and normalised body tension. These findings indicate that distorted tension constitutes an important part of the symptoms in IBS.
文摘Objectives: We assessed the risk of adverse cardiovascular(CV) outcomes associated with atrial fibrillation(AF) in the Candesartan in Heart failure-Assessment of Reduction in Mortality and morbidity(CHARM) program, which enrolled patients with chronic heart failure(CHF) and a broad range of ejection fractions(EFs). Background: Atrial fibrillation is associated with an increased risk of adverse CV outcomes in patients with CHF and reduced EF. The risk of AF in patients with CHF and preserved left ventricular ejection fraction(PEF) is unknown. Methods: A total of 7,599 patients with symptomatic CHF were randomized to candesartan or placebo. Patients were divided by baseline EF(≤40%or >40%) in low or preserved EF groups. Major outcomes were cardiovascular death or hospitalization for worsening heart failure, and all cause mortality. Median follow-up was 37.7 months. Results: A total of 670(17%) patients in the low EF group and 478(19%) in the PEF group had AF at baseline. Atrial fibrillation predicted a high risk of cardiovascular morbidity and mortality regardless of baseline EF. Patients with AF and low EF had the highest absolute risk for adverse CV outcomes. However, AF was associated with greater relative increased risk of the major outcomes in patients with PEF than in patients with low EF: hazard ratio 1.72(95%confidence interval[CI] 1.45 to 2.06)versus 1.29(95%CI 1.14 to 1.46), respectively. The same was true for the risk of all-cause mortality. Candesartan was associated with similar treatment effects regardless of baseline rhythm. Conclusions: Atrial fibrillation is associated with an increased risk of CV outcomes in patients with CHF and either reduced EF or PEF. Candesartan improved outcomes similarly regardless of baseline rhythm.
文摘Intrapartum maternal normoglycemia seems to play an important role in the prevention of adverse perinatal, maternal and neonatal outcomes. Several glucose monitoring protocols have been developed, aiming to achieve a tight glucose monitoring and control. Depending on the type of diabetes and the optimal or suboptimal glycemic control, the treatment options include fasting status of the parturient, frequent monitoring of capillary blood glucose, intravenous dextrose infusion and subcutaneous or intravenous use of insulin. Continuous glucose monitoring system(CGMS) is a relatively new technology that measures interstitial glucose at very short time intervals over a specifi c period of time. The resulting profi le provides a more comprehensive measure of glycemic excursions than intermittent home blood glucose monitoring. Results of studies applying the CGMS technology in patients with or without diabetes mellitus(DM) have revealed new insights in glucose metabolism. Moreover, CGMS have a potential role in the improvement of glycemic control during pregnancy and labor, which may lead to a decrease in perinatal morbidity and mortality. In conclusion, the use of CGMS, with its important technical advantages compared to the conventional way of monitoring, may lead into a more etiological intrapartum management of both the mother and her fetus/infant in pregnancies complicated with DM.
文摘The effect of different kinds of cap layers on optical property of InAs quantum dots (QDs) on GaAs (100) substrate was studied. Temperature dependent photoluminescence (PL) indicates that the PL integrated intensity from the ground state of InAs QDs capped with an intermediate InAIAs layer drops very little as compared to QDs capped with a thin InGaAs or GaAs cap layer from 15 K up to room temperature. PL integrated intensity ratio of the first excited to ground states for InAs QDs capped with an intermediate InAIAs layer is unexpectedly decreased with increasing temperature, which are attributed to phonon bottleneck effect. A virtual barrier is proposed to describe this physics process and shows good agreement with experimental results when fitting the curve with the value of the virtual barrier 30 meV.
文摘Aim: 1) To assess the reliability and validity of the Swedish version of the Child Health Questionnaire (CHQ), 2) to determine the correlation between children’ s and parents’ responses to the CHQ, and 3) to describe and compare responses to the CHQ of four diagnostic groups. Methods: A total of 199 Swedish children aged 9- 16 with diagnoses of asthma (n = 53), diabetes (n = 48), short stature (n = 51) and juvenile chronic arthritis (JCA, n = 47) and their parents answered the CHQ and relevant validation instruments at a clinic check- up. Coefficient alphas were determined for all dimensions of the instrument, and all but four had acceptable to very good reliability (0.75- 0.94). Results: Concerning construct validity, the CHQ correlated significantly with appropriate dimensions of the validation instruments. In general, there were significant correlations between the children’ s and parents’ responses. Comparisons between the diagnostic groups showed several significant differences. The short stature group had the highest quality of life and the JCA group the lowest. There were no sex differences, but children who had not reached puberty scored better on the dimensions of mental health and self- esteem. Conclusion: The Swedish version of the CHQ is a reliable and valid instrument. Furthermore, it is recommended to ask children themselves about their healthrelated quality of life.
文摘Background &Aims: Gain-of-function mutations in the KIT receptor tyrosine kinase gene and rare mutations in the platelet derived growth factor receptor α(PDGFRA) gene are important events in gastrointestinal stromal tumor (GIST) development. Different mutations are reportedly associated with distinctive phenotypes and possibly clinical behavior. We investigated the correlation among mutation type, phenotype, and clinical course in a preimatinib, population-based series of GIST with long-term follow-up. Methods: Genomic DNA from 177 GIST patients was analyzed for KIT exons 9, 11, 13, and 17 and PDGFRA exons 12 and 18 mutations using denaturating high-performance liquid chromatography and bidirectional sequencing. Results:KIT exon 11 mutations were detected in 101 of 177 GIST (61 deletions, 23 missense mutations, and 17 duplications); wild-type (WT) KIT and PDGFRA were detected in 63; KIT exon 9 and exon 17 mutations in 6 and 1, respectively; and PDGFRA exons 12 and 18 mutations in 3 each. GIST >5 cm vs GIST ≤1 cm had mutations in 73%and 33%, respectively. KIT exon 11 deletions were significantly associated with a higher proportion of high risk or overtly malignant groups compared with WT GIST.KIT exon 11 deletions adversely affected outcome. KIT exon 11 duplications and exon 9 mutations were found exclusively in gastric and small intestinal GIST, respectively. Conclusions: KIT exon 11 deletion is an independent adverse prognostic factor in patients with GIST.
文摘IGF- I is important for somatic growth and development of the human fetus an d neonate. IGF- I also plays an important role in normal vascularization of hum an retina, as it has been suggested that insufficient IGF- I may be a factor in the development of retinopathy of prematurity. The principal regulator of the b ioavailability of IGF- I in the circulation is IGF binding protein 3 (IGFBP- 3 ). The aim of this study was to study factors associated with postnatal serum co ncentrations of IGF- I and of IGFBP- 3 in preterm infants from birth to an age corresponding to 40 wk postmenstruation. We conducted a prospective, longitudin al study in which we measured serum IGF- I and IGFBP- 3 concentrations in 76 p reterm infants from birth (postmenstrual ages 23- 32 wk) until discharge from h ospital around 40 wk. Information regarding nutrition, weight gain, maternal fac tors, and treatment with corticosteroids were collected weekly. Variables found to be associated with postnatal change over time of serum IGF- I and IGFBP- 3 were postmenstrual age (p < 0.001), weight gain (standard deviation score) (p < 0.001), and enteral intake of protein (p < 0.001). Male gender was associated wi th lower IGF- I levels (p < 0.001). The relationship between protein intake and IGF- I (and also between protein intake and IGFBP- 3) was positive, as was th e relationship between weight gain and IGF- I (and between weight gain and IGFB P- 3). These results indicate that the degree of prematurity, low enteral prote in intake, male gender, and slow weight gain are associated with a slower postna tal increase of IGF- I in preterm infants.
文摘The modern Western lifestyle may have altered the composition of the commensal microflora. Here,we investigated the first year’s intestinal colonization pattern in 99 vaginally delivered Swedish infants and 17 delivered by cesarean section. Rectal swabs obtained at 3 d of age were cultured for aerobic bacteria and fecal samples obtained at 1,2,4,and 8 wk and at 6 and 12 mo of age were cultivated quantitatively for aerobic and anaerobic bacteria. Vaginally delivered infants more often had Escherichia coli compared with cesarean section-delivered infants,whereas the latter more frequently earned other enterobacteria,such as Klebsiella and Enterobacter. Independent of delivery mode,it took 2 mo until most infants were colonized by enterobacteria,traditionally the first colonizers. In contrast,coagulase-negative staphylococci colonized 99%of the infants from d 3 onwards. The poor adaptation of staphylococci to the gut was shown by declining population sizes after some weeks. Dominating anaerobes were initially bifidobacteria and clostridia,whereas Bacteroides initially colonized only 30%of vaginally delivered infants and increased very slowly in prevalence. Bacteroides colonization was delayed up to 1 y in cesarean section-delivered compared with vaginally delivered infants. Our results show that some “traditional”fecal bacteria are acquired late today especially in cesarean section-delivered infants,probably due to limited environmental circulation. In their absence,skin bacteria like staphylococci have become the first gut colonizers.