Microseismic technology has been proven to be a practical approach for in-situ monitoring of fracture growth during hydraulic fracture stimulations. Microseismic monitoring has rapidly evolved in acquisition methodolo...Microseismic technology has been proven to be a practical approach for in-situ monitoring of fracture growth during hydraulic fracture stimulations. Microseismic monitoring has rapidly evolved in acquisition methodology, data processing, and in this paper, we evaluate the progression of this technology with emphasis on their applications in Barnett shale gas reservoir. Microseismic data analysis indicates a direct proportion between microseismic moment magnitude and depth, yet no relation between microseismic activity and either injection rate or injection volume has been observed. However, large microseismic magnitudes have been recorded where hydraulic fracturing stimulation approaches a fault and therefore the geologic framework should be integrated in such programs. In addition, the geometry of fracture growth resulted by proppant interactions with naturally fractured formations follows unpredictable fashion due to redirecting the injection fluids along flow paths associated with the pre-existing fault network in the reservoir. While microseismic imaging is incredibly useful in revealing the fracture geometry and the way the fracture evolves, recently several concerns have been raised regarding the capability of microseismic data to provide the fracture dimensional parameters and the fracture mechanism that could provide detailed information for reservoir characterization.展开更多
Patients with major depressive disorder （MDD） develop a negative cognitive bias, but how they respond to information in Chinese emotional words is unclear. Here we used a Stroop paradigm with subliminal Chinese emot...Patients with major depressive disorder （MDD） develop a negative cognitive bias, but how they respond to information in Chinese emotional words is unclear. Here we used a Stroop paradigm with subliminal Chinese emotional words to explore the event-related potential components of abnormal emotional processing Jn patients with MDD. The correct rate was similar in MDD and normal control groups, but MDD reaction time was longer than the normal controls, especially to the negative and neutral stimuli. In N270, repeated-measure analysis of variance demonstrated a significant main effect of the relation electrode and valence on peak amplitude and interactions between valence and electrode site. The peak amplitudes of the three kinds of words were different in the two groups （positive 〉 negative 〉 neutral）. The topography of the difference waves indicated that the difference distributed in the frontal and left parietal-temporal sites across the scalp. In N400, there was a significant main effect of the relation electrode and valence on peak amplitude, and the latency showed a main effect of the electrode and an interaction between electrode and group. The amplitudes induced by type of words were significantly different from each other in both groups （positive 〉 negative 〉 neutral）. The topography of the difference waves indicated that the effect of relation type was primarily at left and right frontal and central and left parietal-temporal regions. Both MDD patients and normal controls exhibited significant emotional Stroop effects during the processing of positive/negative Chinese emotional words. MDD patients showed interference in emotional stimuli in early cognitive processing that induced psychological resource intervention during late emotional information processing.展开更多
A transient ischemic attack(TIA)can cause reversible and delayed impairment of cognition,but the specific mechanisms arestill unclear.Annexin al(ANXA1)is a phospholipid-binding protein.Here,we confirmed that cognition...A transient ischemic attack(TIA)can cause reversible and delayed impairment of cognition,but the specific mechanisms arestill unclear.Annexin al(ANXA1)is a phospholipid-binding protein.Here,we confirmed that cognition and hippocampal synapses were impaired in TIA-treated mice,and this could be rescued by multiple mild stimulations(MMS).TIA promoted the interaction of ANXAl and CX3CR1,increased the membrane distribution of CX3CR1 in microglila,and thus enhanced the CX3CR1 and CX3CL1 interaction.These phenomena induced by TIA could be reversed by MMS.Meanwhile,the CX3CR1 membrane distribution and CX3CR1-CX3CL1 interaction were upregulated in primary cultured microglia overexpressing ANXAl,and the spine density was significantly reduced in co-cultured microglia overexpressing ANXAl and neurons.Moreover,ANXAl overexpression in microglia abolished the protection of MMS after TIA.Collectively,our study provides a potential strategy for treating the delayed synaptic injury caused by TIA.展开更多
Newborn infants who had neurogenic bladder dysfunction(NBD)have a normal upper urinary tract at birth.Most of them will develop deterioration of renal function and chronic kidney disease if they do not receive proper ...Newborn infants who had neurogenic bladder dysfunction(NBD)have a normal upper urinary tract at birth.Most of them will develop deterioration of renal function and chronic kidney disease if they do not receive proper management.Children with NBD can develop renal damage at adolescence or earlier,which is due to high detrusor pressures resulted from poor compliance of the bladder,detrusor overactivity against a closed sphincter or detrusor sphincter dyssynergia.To preserve renal function and prevent deterioration of the kidneys,NBD must be treated immediately after being diagnosed.Over the last few years there was great progress in the treatment of children with the NBD.We searched PubMed and the Cochrane Library for peer-reviewed articles published in any language up to March 10,2021,using the search term“neurogenic bladder children.”Our search excluded diagnosis,pathophysiology,surgical treatment of spinal cord injury and spina bifida.The research identified the effectiveness of treatment regimens targeting prevention of chronic kidney disease and the indications of kidney transplantation.The results of the research showed that NBD in children should be diagnosed early in life,and the child should receive the proper management.The literature search concluded that the management of NBD in children would be personalized for every case and could be changed according to response to treatment,side effects,child compliance,availability of treatment modality and costs of treatment.The objectives of the study are to present the different options of management of NBD in children and the selection of the proper method in a personalized manner.展开更多
Introduction Urticaria is a common disease in dermatology.Physical urticarias are a group of urticaria that are induced by various physical stimulations,including shear force,cold,heat,pressure,and solar and vibratory...Introduction Urticaria is a common disease in dermatology.Physical urticarias are a group of urticaria that are induced by various physical stimulations,including shear force,cold,heat,pressure,and solar and vibratory stimulations.Cold contact urticaria (CCU),the second most common subtype among all physical urticarias in China,is characterized by itchy wheals and edema on skin following exposure to cold.The ice cube skin contact test is one of the most used methods by which to make the diagnosis of CCU[1].展开更多
In neurodegenerative disorders such as Parkinson＇s disease （PD）, deep brain stimulation （DBS） is a desirable approach when the medication is less effective for treating the symptoms. DBS incorporates transferring...In neurodegenerative disorders such as Parkinson＇s disease （PD）, deep brain stimulation （DBS） is a desirable approach when the medication is less effective for treating the symptoms. DBS incorporates transferring electrical pulses to a specific tissue of the central nervous system, obtaining therapeutic results by modulating the neuronal activity of that region. DBS has certain advantages such as reversibility and adjustability features over medication, since the neuronal firing patterns can be recorded and used to alter the parameters of the DBS signal （Benabid et al., 2009）. One of the DBS indications is its ability to suppress the abnormal neuronal activity to treat symptoms like tremor, akinesia and dystonia.展开更多
文摘Microseismic technology has been proven to be a practical approach for in-situ monitoring of fracture growth during hydraulic fracture stimulations. Microseismic monitoring has rapidly evolved in acquisition methodology, data processing, and in this paper, we evaluate the progression of this technology with emphasis on their applications in Barnett shale gas reservoir. Microseismic data analysis indicates a direct proportion between microseismic moment magnitude and depth, yet no relation between microseismic activity and either injection rate or injection volume has been observed. However, large microseismic magnitudes have been recorded where hydraulic fracturing stimulation approaches a fault and therefore the geologic framework should be integrated in such programs. In addition, the geometry of fracture growth resulted by proppant interactions with naturally fractured formations follows unpredictable fashion due to redirecting the injection fluids along flow paths associated with the pre-existing fault network in the reservoir. While microseismic imaging is incredibly useful in revealing the fracture geometry and the way the fracture evolves, recently several concerns have been raised regarding the capability of microseismic data to provide the fracture dimensional parameters and the fracture mechanism that could provide detailed information for reservoir characterization.
基金the National Natural Science Foundation of China,No.30570609
文摘Patients with major depressive disorder （MDD） develop a negative cognitive bias, but how they respond to information in Chinese emotional words is unclear. Here we used a Stroop paradigm with subliminal Chinese emotional words to explore the event-related potential components of abnormal emotional processing Jn patients with MDD. The correct rate was similar in MDD and normal control groups, but MDD reaction time was longer than the normal controls, especially to the negative and neutral stimuli. In N270, repeated-measure analysis of variance demonstrated a significant main effect of the relation electrode and valence on peak amplitude and interactions between valence and electrode site. The peak amplitudes of the three kinds of words were different in the two groups （positive 〉 negative 〉 neutral）. The topography of the difference waves indicated that the difference distributed in the frontal and left parietal-temporal sites across the scalp. In N400, there was a significant main effect of the relation electrode and valence on peak amplitude, and the latency showed a main effect of the electrode and an interaction between electrode and group. The amplitudes induced by type of words were significantly different from each other in both groups （positive 〉 negative 〉 neutral）. The topography of the difference waves indicated that the effect of relation type was primarily at left and right frontal and central and left parietal-temporal regions. Both MDD patients and normal controls exhibited significant emotional Stroop effects during the processing of positive/negative Chinese emotional words. MDD patients showed interference in emotional stimuli in early cognitive processing that induced psychological resource intervention during late emotional information processing.
基金This work.was supported bythe National Natural Science Foundation of China(31771126).
文摘A transient ischemic attack(TIA)can cause reversible and delayed impairment of cognition,but the specific mechanisms arestill unclear.Annexin al(ANXA1)is a phospholipid-binding protein.Here,we confirmed that cognition and hippocampal synapses were impaired in TIA-treated mice,and this could be rescued by multiple mild stimulations(MMS).TIA promoted the interaction of ANXAl and CX3CR1,increased the membrane distribution of CX3CR1 in microglila,and thus enhanced the CX3CR1 and CX3CL1 interaction.These phenomena induced by TIA could be reversed by MMS.Meanwhile,the CX3CR1 membrane distribution and CX3CR1-CX3CL1 interaction were upregulated in primary cultured microglia overexpressing ANXAl,and the spine density was significantly reduced in co-cultured microglia overexpressing ANXAl and neurons.Moreover,ANXAl overexpression in microglia abolished the protection of MMS after TIA.Collectively,our study provides a potential strategy for treating the delayed synaptic injury caused by TIA.
文摘Newborn infants who had neurogenic bladder dysfunction(NBD)have a normal upper urinary tract at birth.Most of them will develop deterioration of renal function and chronic kidney disease if they do not receive proper management.Children with NBD can develop renal damage at adolescence or earlier,which is due to high detrusor pressures resulted from poor compliance of the bladder,detrusor overactivity against a closed sphincter or detrusor sphincter dyssynergia.To preserve renal function and prevent deterioration of the kidneys,NBD must be treated immediately after being diagnosed.Over the last few years there was great progress in the treatment of children with the NBD.We searched PubMed and the Cochrane Library for peer-reviewed articles published in any language up to March 10,2021,using the search term“neurogenic bladder children.”Our search excluded diagnosis,pathophysiology,surgical treatment of spinal cord injury and spina bifida.The research identified the effectiveness of treatment regimens targeting prevention of chronic kidney disease and the indications of kidney transplantation.The results of the research showed that NBD in children should be diagnosed early in life,and the child should receive the proper management.The literature search concluded that the management of NBD in children would be personalized for every case and could be changed according to response to treatment,side effects,child compliance,availability of treatment modality and costs of treatment.The objectives of the study are to present the different options of management of NBD in children and the selection of the proper method in a personalized manner.
文摘Introduction Urticaria is a common disease in dermatology.Physical urticarias are a group of urticaria that are induced by various physical stimulations,including shear force,cold,heat,pressure,and solar and vibratory stimulations.Cold contact urticaria (CCU),the second most common subtype among all physical urticarias in China,is characterized by itchy wheals and edema on skin following exposure to cold.The ice cube skin contact test is one of the most used methods by which to make the diagnosis of CCU[1].
文摘In neurodegenerative disorders such as Parkinson＇s disease （PD）, deep brain stimulation （DBS） is a desirable approach when the medication is less effective for treating the symptoms. DBS incorporates transferring electrical pulses to a specific tissue of the central nervous system, obtaining therapeutic results by modulating the neuronal activity of that region. DBS has certain advantages such as reversibility and adjustability features over medication, since the neuronal firing patterns can be recorded and used to alter the parameters of the DBS signal （Benabid et al., 2009）. One of the DBS indications is its ability to suppress the abnormal neuronal activity to treat symptoms like tremor, akinesia and dystonia.
