In this paper, the interactions of multiple parallel symmetric and permeable finite length cracks in a piezoelectric/piezomagnetic material plane subjected to anti-plane shear stress loading are studied by the Schmidt...In this paper, the interactions of multiple parallel symmetric and permeable finite length cracks in a piezoelectric/piezomagnetic material plane subjected to anti-plane shear stress loading are studied by the Schmidt method.The problem is formulated through Fourier transform into dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces.To solve the dual integral equations, the displacement jumps across the crack surfaces are directly expanded as a series of Jacobi polynomials.Finally, the relation between the electric field, the magnetic flux field and the stress field near the crack tips is obtained.The results show that the stress, the electric displacement and the magnetic flux intensity factors at the crack tips depend on the length and spacing of the cracks.It is also revealed that the crack shielding effect presents in piezoelectric/piezomagnetic materials.展开更多
The Schmidt method is adopted to investigate the fracture problem of multiple parallel symmetric and permeable finite length mode-III cracks in a functionally graded piezoelectric/piezomagnetic material plane. This pr...The Schmidt method is adopted to investigate the fracture problem of multiple parallel symmetric and permeable finite length mode-III cracks in a functionally graded piezoelectric/piezomagnetic material plane. This problem is formulated into dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces. In order to obtain the dual integral equations, the displacement jumps across the crack surfaces are directly expanded as a series of Jacobi polynomials. The results show that the stress, the electric displacement, and the magnetic flux intensity factors of cracks depend on the crack length, the functionally graded parameter, and the distance among the multiple parallel cracks. The crack shielding effect is also obviously presented in a functionally graded piezoelectric/piezomagnetic material plane with mul- tiple parallel symmetric mode-III cracks.展开更多
Multiple symmetric lipomas are a rare disease characterized by multiple symmetrical deposits of adipose tissue associated with alcohol abuse.A 68-year-old man was admitted to our hospital for being operated on for a m...Multiple symmetric lipomas are a rare disease characterized by multiple symmetrical deposits of adipose tissue associated with alcohol abuse.A 68-year-old man was admitted to our hospital for being operated on for a mass growth on the neck and back.Based on the patient’s medical history and preoperative magnetic resonance imaging findings,we performed surgical resection.There was no recurrence at one year postoperatively.展开更多
BACKGROUND Madelung’s disease,also known as multiple symmetrical lipomatosis,is a rare,underrecognized disorder of fat metabolism that results in unusual accumulation of subcutaneous fat deposits around the neck,shou...BACKGROUND Madelung’s disease,also known as multiple symmetrical lipomatosis,is a rare,underrecognized disorder of fat metabolism that results in unusual accumulation of subcutaneous fat deposits around the neck,shoulders,upper arms,trunk,hips,and upper thighs.Our case demonstrates the importance of differential diagnosis and the value of a superb microvascular imaging technique for suspecting and confirming Madelung’s disease.Timely diagnosis and alcohol abstinence could prevent the progression of growing fatty masses and prevent surgery.CASE SUMMARY A 62-year-old male was admitted to the Rheumatology center complaining of symmetric subcutaneous tumors in the area of the parotid and submandibular salivary glands,small soft masses in the occiput and upper third of the forearm,rashes on calves.A high titer of rheumatoid factor and low concentrations of serum complements were detected.The high-end ultrasound and magnetic resonance imaging examinations of all affected areas of the soft tissues showed predominantly adipose tissue(lipomas)without suspicion of liposarcoma.The biopsy from the small salivary gland revealed no pathology.After evaluating the patient’s clinical presentation(symmetrical lipomatosis,cirrhosis,gynecomastia,anemia,hyperuricemia),Madelung’s disease,type I,along with the psoriatic rash and psoriatic arthritis and secondary liver cirrhosis were established.CONCLUSION Madelung’s disease consists of many co-occurring disorders imitating and overlapping with other conditions.Ultrasonography is the first choice for suspecting and confirming symmetrical lipomatosis.展开更多
BACKGROUND Madelung’s disease(MD)is a chronic alcoholism-associated metabolic syndrome characterized by symmetrical subcutaneous deposition of adipose tissue in the head,neck,shoulders,back,trunk,and nerve roots of t...BACKGROUND Madelung’s disease(MD)is a chronic alcoholism-associated metabolic syndrome characterized by symmetrical subcutaneous deposition of adipose tissue in the head,neck,shoulders,back,trunk,and nerve roots of the upper and lower limbs.It is relatively rare in Asian individuals and is prone to misdiagnosis.Herein,we report a case of a patient with MD who had undergone surgical management at our hospital,and we discuss the pathogenesis,diagnosis,and treatment of MD.CASE SUMMARY We report a case of MD in a 65-year-old man of Han descent.The patient had multiple,painless progressive masses for more than five years in the neck and more than 30 years in the upper back.Because of neck mobility limitations and progressive cosmetic deformities caused by the masses,he was admitted to our hospital.He drank approximately 500 mL of liquor per day and smoked heavily for more than 30 years.Contrast-enhanced computed tomography of the neck and chest documented abundant unencapsulated,subcutaneous fatty deposits.We prepared a staged operation plan.The patient was diagnosed with MD;he was advised to abstain from alcohol and was followed up regularly.After a 3-month follow-up,no recurrence of fat accumulation was found in the surgical areas.CONCLUSION This report presents a case of surgical treatment for MD to improve clinicians'understanding of the disease.展开更多
BACKGROUND Madelung’s disease(MD)is a rare disorder of lipid metabolism,characterized by the growth of unencapsulated masses of adipose tissue symmetrically deposited around the neck,shoulders,or other sites around t...BACKGROUND Madelung’s disease(MD)is a rare disorder of lipid metabolism,characterized by the growth of unencapsulated masses of adipose tissue symmetrically deposited around the neck,shoulders,or other sites around the body.Its pathological mechanism is not yet known.One of the most common comorbidities in MD patients is liver disease,especially chronic alcoholic liver disease(CALD);however,no reports exist of acute kidney injury(AKI)with MD.CASE SUMMARY We report a 60-year-old man who presented with complaint of edema in the lower limbs that had persisted for 3 d.Physical examination showed subcutaneous masses around the neck,and history-taking revealed the masses to have been present for 2 years and long-term heavy drinking.Considering the clinical symptoms,along with various laboratory test results and imaging characteristics,a diagnosis was made of MD with acute exacerbation of CALD and AKI.The patient was treated with liver function protection and traditional Chinese medicine,without surgical intervention.He was advised to quit drinking.After 10 d,the edema had subsided,renal function indicators returned to normal,liver function significantly improved,and size of subcutaneous masses remained stable.CONCLUSION In MD,concomitant liver or kidney complications are possible and monitoring of liver and kidney functions can be beneficial.展开更多
Multiple Symmetric Lipomatosis (MSL) is a rare condition characterized by a symmetrical pattern of massive fatty deposits. This condition predominates in males, between 30 and 60 years. In this article, the authors pr...Multiple Symmetric Lipomatosis (MSL) is a rare condition characterized by a symmetrical pattern of massive fatty deposits. This condition predominates in males, between 30 and 60 years. In this article, the authors present a case report of a 47-year-old man that resorted to consultation to perform routine medical exams, without any complaint associated. Physical examination shows multiple bilateral swellings in the proximal region of the upper limbs and analytically presents hyperuricemia, hypertriglyceridemia, hypercholesterolemia and changes in hepatic tests. CT revealed the presence of non-encapsulated homogeneous masses of adipose tissue in the proximal region of the limbs. Currently the patient is asymptomatic, being monitoring in consultation.展开更多
Objective To compare the clinical efficacy between acupuncture and intravenous administration of lipoic acid and alprostadil for distal symmetric multiple peripheral neuropathy of diabetes mellitus.Methods Sixty patie...Objective To compare the clinical efficacy between acupuncture and intravenous administration of lipoic acid and alprostadil for distal symmetric multiple peripheral neuropathy of diabetes mellitus.Methods Sixty patients were randomly divided into an acupuncture group(31 cases)and a medication group(29 cases).Patients in the two groups received basic treatment to control blood sugar within a safe range.On this basis,patients in the acu-展开更多
基金supported by the National Natural Science Foundation of China (Nos.10572043 and 10872057)the Research Fund for the Doctoral Program of Higher Education of China (No.20092302110006)the Natural Science Foundation of Hei Long Jiang Province (No.A2007-05)
文摘In this paper, the interactions of multiple parallel symmetric and permeable finite length cracks in a piezoelectric/piezomagnetic material plane subjected to anti-plane shear stress loading are studied by the Schmidt method.The problem is formulated through Fourier transform into dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces.To solve the dual integral equations, the displacement jumps across the crack surfaces are directly expanded as a series of Jacobi polynomials.Finally, the relation between the electric field, the magnetic flux field and the stress field near the crack tips is obtained.The results show that the stress, the electric displacement and the magnetic flux intensity factors at the crack tips depend on the length and spacing of the cracks.It is also revealed that the crack shielding effect presents in piezoelectric/piezomagnetic materials.
基金Project supported by the National Natural Science Foundation of China(Nos.11002041 and11272105)the Key Laboratory Opening Funding of Advanced Composites in Special Environment(No.HIT.KLOF.2009032)the Research Fund for the Doctoral Program of Higher Education ofChina(No.20092302110006)
文摘The Schmidt method is adopted to investigate the fracture problem of multiple parallel symmetric and permeable finite length mode-III cracks in a functionally graded piezoelectric/piezomagnetic material plane. This problem is formulated into dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces. In order to obtain the dual integral equations, the displacement jumps across the crack surfaces are directly expanded as a series of Jacobi polynomials. The results show that the stress, the electric displacement, and the magnetic flux intensity factors of cracks depend on the crack length, the functionally graded parameter, and the distance among the multiple parallel cracks. The crack shielding effect is also obviously presented in a functionally graded piezoelectric/piezomagnetic material plane with mul- tiple parallel symmetric mode-III cracks.
文摘Multiple symmetric lipomas are a rare disease characterized by multiple symmetrical deposits of adipose tissue associated with alcohol abuse.A 68-year-old man was admitted to our hospital for being operated on for a mass growth on the neck and back.Based on the patient’s medical history and preoperative magnetic resonance imaging findings,we performed surgical resection.There was no recurrence at one year postoperatively.
文摘BACKGROUND Madelung’s disease,also known as multiple symmetrical lipomatosis,is a rare,underrecognized disorder of fat metabolism that results in unusual accumulation of subcutaneous fat deposits around the neck,shoulders,upper arms,trunk,hips,and upper thighs.Our case demonstrates the importance of differential diagnosis and the value of a superb microvascular imaging technique for suspecting and confirming Madelung’s disease.Timely diagnosis and alcohol abstinence could prevent the progression of growing fatty masses and prevent surgery.CASE SUMMARY A 62-year-old male was admitted to the Rheumatology center complaining of symmetric subcutaneous tumors in the area of the parotid and submandibular salivary glands,small soft masses in the occiput and upper third of the forearm,rashes on calves.A high titer of rheumatoid factor and low concentrations of serum complements were detected.The high-end ultrasound and magnetic resonance imaging examinations of all affected areas of the soft tissues showed predominantly adipose tissue(lipomas)without suspicion of liposarcoma.The biopsy from the small salivary gland revealed no pathology.After evaluating the patient’s clinical presentation(symmetrical lipomatosis,cirrhosis,gynecomastia,anemia,hyperuricemia),Madelung’s disease,type I,along with the psoriatic rash and psoriatic arthritis and secondary liver cirrhosis were established.CONCLUSION Madelung’s disease consists of many co-occurring disorders imitating and overlapping with other conditions.Ultrasonography is the first choice for suspecting and confirming symmetrical lipomatosis.
基金the National Natural Science Foundation of China,No.81974581Basic and Applied Research Foundation of Guangdong Province,China,No.2020A1515110407Scientific Research Fund of Guangdong Provincial Bureau of Traditional Chinese Medicine China,No.20211200.
文摘BACKGROUND Madelung’s disease(MD)is a chronic alcoholism-associated metabolic syndrome characterized by symmetrical subcutaneous deposition of adipose tissue in the head,neck,shoulders,back,trunk,and nerve roots of the upper and lower limbs.It is relatively rare in Asian individuals and is prone to misdiagnosis.Herein,we report a case of a patient with MD who had undergone surgical management at our hospital,and we discuss the pathogenesis,diagnosis,and treatment of MD.CASE SUMMARY We report a case of MD in a 65-year-old man of Han descent.The patient had multiple,painless progressive masses for more than five years in the neck and more than 30 years in the upper back.Because of neck mobility limitations and progressive cosmetic deformities caused by the masses,he was admitted to our hospital.He drank approximately 500 mL of liquor per day and smoked heavily for more than 30 years.Contrast-enhanced computed tomography of the neck and chest documented abundant unencapsulated,subcutaneous fatty deposits.We prepared a staged operation plan.The patient was diagnosed with MD;he was advised to abstain from alcohol and was followed up regularly.After a 3-month follow-up,no recurrence of fat accumulation was found in the surgical areas.CONCLUSION This report presents a case of surgical treatment for MD to improve clinicians'understanding of the disease.
基金Supported by the National Natural Science Foundation of China,No.81973831the Sichuan Provincial Department of Finance,Sichuan Provincial Department of Labor and Social Security(2020)No.201 Traditional Chinese Medicine Inheritance and Innovation Ten Thousands of Talents Project-Ye Chuanhui Studio.
文摘BACKGROUND Madelung’s disease(MD)is a rare disorder of lipid metabolism,characterized by the growth of unencapsulated masses of adipose tissue symmetrically deposited around the neck,shoulders,or other sites around the body.Its pathological mechanism is not yet known.One of the most common comorbidities in MD patients is liver disease,especially chronic alcoholic liver disease(CALD);however,no reports exist of acute kidney injury(AKI)with MD.CASE SUMMARY We report a 60-year-old man who presented with complaint of edema in the lower limbs that had persisted for 3 d.Physical examination showed subcutaneous masses around the neck,and history-taking revealed the masses to have been present for 2 years and long-term heavy drinking.Considering the clinical symptoms,along with various laboratory test results and imaging characteristics,a diagnosis was made of MD with acute exacerbation of CALD and AKI.The patient was treated with liver function protection and traditional Chinese medicine,without surgical intervention.He was advised to quit drinking.After 10 d,the edema had subsided,renal function indicators returned to normal,liver function significantly improved,and size of subcutaneous masses remained stable.CONCLUSION In MD,concomitant liver or kidney complications are possible and monitoring of liver and kidney functions can be beneficial.
文摘Multiple Symmetric Lipomatosis (MSL) is a rare condition characterized by a symmetrical pattern of massive fatty deposits. This condition predominates in males, between 30 and 60 years. In this article, the authors present a case report of a 47-year-old man that resorted to consultation to perform routine medical exams, without any complaint associated. Physical examination shows multiple bilateral swellings in the proximal region of the upper limbs and analytically presents hyperuricemia, hypertriglyceridemia, hypercholesterolemia and changes in hepatic tests. CT revealed the presence of non-encapsulated homogeneous masses of adipose tissue in the proximal region of the limbs. Currently the patient is asymptomatic, being monitoring in consultation.
文摘Objective To compare the clinical efficacy between acupuncture and intravenous administration of lipoic acid and alprostadil for distal symmetric multiple peripheral neuropathy of diabetes mellitus.Methods Sixty patients were randomly divided into an acupuncture group(31 cases)and a medication group(29 cases).Patients in the two groups received basic treatment to control blood sugar within a safe range.On this basis,patients in the acu-
