Endoscopic ultrasound(EUS) is one of the most important modalities for the diagnosis of digestive tract diseases.EUS has been evolving ever since it was introduced.New techniques such as elastography and contrast enha...Endoscopic ultrasound(EUS) is one of the most important modalities for the diagnosis of digestive tract diseases.EUS has been evolving ever since it was introduced.New techniques such as elastography and contrast enhancement have emerged, increasing the accuracy, sensitivity and specificity of EUS for the diagnosis of digestive tract diseases including pancreatic masses and lymphadenopathy.EUS-elastography evaluates tissue elasticity and therefore, can be used to differentiate various lesions.Contrast-enhanced EUS can distinguish benign from malignant pancreatic lesions and lymphadenopathy using the intravenous injection of contrast agents.This review discusses the principles and types of these new techniques, as well as their clinical applications and limitations.展开更多
Cangmai 6005 is a national wheat variety approved by Cangzhou Academy of Agriculture and Forestry Sciences,which has the characteristics of drought resistance,salt tolerance,high yield and stable yield. According to t...Cangmai 6005 is a national wheat variety approved by Cangzhou Academy of Agriculture and Forestry Sciences,which has the characteristics of drought resistance,salt tolerance,high yield and stable yield. According to the characteristics of dry-alkali land in Cangzhou City and the variety characteristics,the new cultivation technique was completed.展开更多
【正】INTRODUCTION Femtosecond laser technology,introduced clinically for ophthalmic surgery as a technique for creating lamellar flaps in laser in situ keratomileusis(LASIK),has recently been developed into a tool fo...【正】INTRODUCTION Femtosecond laser technology,introduced clinically for ophthalmic surgery as a technique for creating lamellar flaps in laser in situ keratomileusis(LASIK),has recently been developed into a tool for cataract surgery.Preliminary experience for femtosecond laser-assisted cataract surgery show appropriate safety and efficacy,and possible advantage over conventional cataract surgery[1-4].The ability of the femtosecond laser to fragment the lens results in the need for less ultrasound energy to be expended inside the eye.Several studies indicate that less effective phacoemulsification time is needed to emulsify the lens展开更多
Using the technique of integration within an ordered product of operators and the intermediate coordinatemomentum representation in quantum optics, as well as the excited squeezed state we derive a new form of Legendr...Using the technique of integration within an ordered product of operators and the intermediate coordinatemomentum representation in quantum optics, as well as the excited squeezed state we derive a new form of Legendre polynomials.展开更多
Some techniques such as die surface description, contact judgement algorithm and remeshing are proposed to improve the robustness of the numerical solution. Based on these techniques, a three-dimensional rigid-plastic...Some techniques such as die surface description, contact judgement algorithm and remeshing are proposed to improve the robustness of the numerical solution. Based on these techniques, a three-dimensional rigid-plastic FEM code has been developed. Isothermal forging process of a cylindrical housing has been simulated. The simulation results show that the given techniques and the FEM code are reasonable and feasible for three-dimensional bulk forming processes.展开更多
【正】INTRODUCTION Anterior ciliary arteries provide 70%of the vascular supply of the anterior segment.A significant interruption of the vascular flow of these arteries increases the risk for anterior ischemia.Althoug...【正】INTRODUCTION Anterior ciliary arteries provide 70%of the vascular supply of the anterior segment.A significant interruption of the vascular flow of these arteries increases the risk for anterior ischemia.Although the frequency of this special condition is low after strabismus surgery(1:13 000)[1],its effects may involve substantial visual problems[2].We report the successful outcome of a new surgical approach for strabismus management in a case of high risk for anterior ischemia.Specifically,we show the correction of the horizontal ocular deviation by means of an adjustable muscle展开更多
Adenoma detection rate(ADR) is a key component of colonoscopy quality assessment, with a direct link between itself and future mortality from colorectal cancer. There are a number of potential factors, both modifiable...Adenoma detection rate(ADR) is a key component of colonoscopy quality assessment, with a direct link between itself and future mortality from colorectal cancer. There are a number of potential factors, both modifiable and non-modifiable that can impact upon ADR. As methods, understanding and technologies advance, so should our ability to improve ADRs, and thus, reduce colorectal cancer mortality. This article will review new technologies and techniques that improve ADR, both in terms of the endoscopes themselves and adjuncts to current systems. In particular it focuses on effective techniques and behaviours, developments in image enhancement, advancement in endoscope design and developments in accessories that may improve ADR. It also highlights the key role that continued medical education plays in improving the quality of colonoscopy and thus ADR. The review aims to present a balanced summary of the evidence currently available and does not propose to serve as a guideline.展开更多
Using the technique of integration within an antinormally ordered product of operators we present a convenient approach for deriving some new operator identities in quantum optics theory. Based on P-representation we ...Using the technique of integration within an antinormally ordered product of operators we present a convenient approach for deriving some new operator identities in quantum optics theory. Based on P-representation we also derive a new formula for evaluating photocount distribution.展开更多
The main morphological characteristics, producing area and growth characteristics of sixteen new varieties of Chinese white poplar (Populus tomentosa Carr. ) are reported, aiming at providing reference for breeding ...The main morphological characteristics, producing area and growth characteristics of sixteen new varieties of Chinese white poplar (Populus tomentosa Carr. ) are reported, aiming at providing reference for breeding and extension of new varieties.展开更多
In this paper, the characteristics and yield performance of new variety Xi-angyou196 were introduced, and its high-yielding cuItivation techniques were summa-rized, finally, the corresponding matching cuItivation tech...In this paper, the characteristics and yield performance of new variety Xi-angyou196 were introduced, and its high-yielding cuItivation techniques were summa-rized, finally, the corresponding matching cuItivation techniques through experiment and demonstration were put forward.展开更多
A special X-radiography,used in obtaining the deformed specimen grating in in-plane moire method is introduced.The density of gridline is up to 50 lines / mm.This method is suitable not only for the copy of grating in...A special X-radiography,used in obtaining the deformed specimen grating in in-plane moire method is introduced.The density of gridline is up to 50 lines / mm.This method is suitable not only for the copy of grating in fiat surface but also for that in curved surface.From unfolding the copy and superposing it with a reference grating,the moire effect arises.By processing this moire fringes with the digital image processing unit, the strain distribution would be obtained.Furthermore,the u-and v-displacement fields could be separated by the optical processing of this copy.The measurment sensitivity and accuracy become better simultaneously because of the fringe multiplication.Thus,this method makes it possible to measure the elastic-plastic strain precisely in any developable curved surfaces,for example, the surface of shaft,rotary-wing,cylindrical shell and cone shell etc.展开更多
The frontalis suspension technique, which is a well-known surgical procedure, has been used for congenital ptosis for many years [1]. Several autologous and foreign grafts or materials have been preferred for this sus...The frontalis suspension technique, which is a well-known surgical procedure, has been used for congenital ptosis for many years [1]. Several autologous and foreign grafts or materials have been preferred for this suspension, such as collagen, tensor fascia lata, palmaris longus tendon, deep temporal fascia, catgut, prolene, silicone, stainless steel, and supramid suture . Each of these have their own advantages and disadvantages; however, the superficial temporal fascia has not been used for the frontalis suspension method before.展开更多
This Special Issue of the Journal of Rock Mechanics and GeotechnicalEngineering (JRMGE) contains 13 papers prepared by internationalexperts on various general topics in geomechanics, rockmechanics and geotechnical e...This Special Issue of the Journal of Rock Mechanics and GeotechnicalEngineering (JRMGE) contains 13 papers prepared by internationalexperts on various general topics in geomechanics, rockmechanics and geotechnical engineering. It represents a usefulmix of theoretical developments, testing and practical applications.We present in the following brief details in the papers, alphabeticallyin accordance with the last name of the first author.Barla presents a review of tunneling techniques with emphasison the full-face method combining full-face excavation and facereinforcement by means of fiber-glass elements with a yieldcontrolsupport. This method has been used successfully in difficultgeologic conditions, and for a wide spectrum of ground situations.The validation of the method with respect to the Saint Martin LaPorte access adit along the LyoneTurin Base tunnel experiencingseverely squeezing conditions during excavation is also includedin the paper. The numerical modeling with consideration of therock mass time-dependent behavior showed a satisfactory agreementwith monitoring results.展开更多
Well cementing is an important step in petroleum engineering territory. Through many years study and research, China Nation Petroleum Corporation(abbreviated as CNPC) has made many good progresses in cementing process...Well cementing is an important step in petroleum engineering territory. Through many years study and research, China Nation Petroleum Corporation(abbreviated as CNPC) has made many good progresses in cementing process, and a series of cementing materials, cementing tools, and associated cementing techniques to them have been developed. Over the recent years, there have been significant improvements in application of single slurry system to super deep well, horizontal well, large displacement well and wells with large temperature span between cementing top and well bottom. Favorable results have been gained in field application of super high density cement slurry system and super low density cement slurry system. Application of conventional cementing tools and accessories has been the matured techniques, and breakthroughs have been made in liner hanger and swellable material.展开更多
A new breeding program"Creating new middle breedingmaterials by utilizing new techniques",cooperated byChina National Rice Research Institute (CNRRI)andJapan International Research Center for Agricultural Sc...A new breeding program"Creating new middle breedingmaterials by utilizing new techniques",cooperated byChina National Rice Research Institute (CNRRI)andJapan International Research Center for Agricultural Sci-ence(JIRCAS)",started in Hangzhou,China in 1999.展开更多
After 8 yrs lab experiments and field tests, an advanced technique for identifying varieties resistance to rice blast was developed by a research group in Plant Protection Institute, Zhejiang Academy of Agricultural S...After 8 yrs lab experiments and field tests, an advanced technique for identifying varieties resistance to rice blast was developed by a research group in Plant Protection Institute, Zhejiang Academy of Agricultural Sciences. With this technique, the inoculum was prepared on a maize-rice-straw-agar media which was suitable for sporulation of most rice blast pathogen isolates. To avoid possible virulence variation during the vegetative growth, the conidia were harvested and preserved for later different sets of resistance evaluation tests. A simple and precise new method—smear inoculation was used for infection. The experi-展开更多
To introduce a safe,effective and lasting rhytidectomy technique without destroying the configuration of sideburns.Methods The operation is performed through the coronal incision,the temporal incision that is parallel...To introduce a safe,effective and lasting rhytidectomy technique without destroying the configuration of sideburns.Methods The operation is performed through the coronal incision,the temporal incision that is paralleled to the nasolabial sulcus,and the preauricular incision in the sideburns.Multi-layer dissection of facial tissue is made.Results 46 patints with aging face have been treated using this technique since 2002.All patinets obtained good curative effects without any severe complications.Conclusion This operation technique may maintain the natural configuration of the preauricular area and sideburns,result obscure incision scar and avoid harming important nerves or vessels.Multi-layer dissection accords with anatomical principles and produces a lasting curative effect.6 refs,2 figs.展开更多
With the application of new techniques, materials and technologies in West East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding u...With the application of new techniques, materials and technologies in West East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding up the development and improvement of the strength as a whole in aspects of smelting industry, pipe fabrication, pipeline construction and equipment manufacture,making China’s pipeline industry catch up with the trend of development of the world advanced level.展开更多
A new technique for solving large deflection problem of circular plates flexural non-axisymmetrically is proposed in this paper. The large deflection problem of a circular plate with built-in edge under non-axisymmetr...A new technique for solving large deflection problem of circular plates flexural non-axisymmetrically is proposed in this paper. The large deflection problem of a circular plate with built-in edge under non-axisymmetrical load is taken as an example to clarify the principle and procedure of the technique mentioned here. The technique given here can also be used to solve large deflection problem of circular plates under other non-axisymmetrical loads and boundary conditions.展开更多
文摘Endoscopic ultrasound(EUS) is one of the most important modalities for the diagnosis of digestive tract diseases.EUS has been evolving ever since it was introduced.New techniques such as elastography and contrast enhancement have emerged, increasing the accuracy, sensitivity and specificity of EUS for the diagnosis of digestive tract diseases including pancreatic masses and lymphadenopathy.EUS-elastography evaluates tissue elasticity and therefore, can be used to differentiate various lesions.Contrast-enhanced EUS can distinguish benign from malignant pancreatic lesions and lymphadenopathy using the intravenous injection of contrast agents.This review discusses the principles and types of these new techniques, as well as their clinical applications and limitations.
基金Supported by National Key Research and Development Program of China(2017YFD0100600)
文摘Cangmai 6005 is a national wheat variety approved by Cangzhou Academy of Agriculture and Forestry Sciences,which has the characteristics of drought resistance,salt tolerance,high yield and stable yield. According to the characteristics of dry-alkali land in Cangzhou City and the variety characteristics,the new cultivation technique was completed.
文摘【正】INTRODUCTION Femtosecond laser technology,introduced clinically for ophthalmic surgery as a technique for creating lamellar flaps in laser in situ keratomileusis(LASIK),has recently been developed into a tool for cataract surgery.Preliminary experience for femtosecond laser-assisted cataract surgery show appropriate safety and efficacy,and possible advantage over conventional cataract surgery[1-4].The ability of the femtosecond laser to fragment the lens results in the need for less ultrasound energy to be expended inside the eye.Several studies indicate that less effective phacoemulsification time is needed to emulsify the lens
文摘Using the technique of integration within an ordered product of operators and the intermediate coordinatemomentum representation in quantum optics, as well as the excited squeezed state we derive a new form of Legendre polynomials.
基金This work was supported by the Brain Korea 2lProject and the Grallt of Post-Doc Program, KyungpookNational University (1999).
文摘Some techniques such as die surface description, contact judgement algorithm and remeshing are proposed to improve the robustness of the numerical solution. Based on these techniques, a three-dimensional rigid-plastic FEM code has been developed. Isothermal forging process of a cylindrical housing has been simulated. The simulation results show that the given techniques and the FEM code are reasonable and feasible for three-dimensional bulk forming processes.
文摘【正】INTRODUCTION Anterior ciliary arteries provide 70%of the vascular supply of the anterior segment.A significant interruption of the vascular flow of these arteries increases the risk for anterior ischemia.Although the frequency of this special condition is low after strabismus surgery(1:13 000)[1],its effects may involve substantial visual problems[2].We report the successful outcome of a new surgical approach for strabismus management in a case of high risk for anterior ischemia.Specifically,we show the correction of the horizontal ocular deviation by means of an adjustable muscle
文摘Adenoma detection rate(ADR) is a key component of colonoscopy quality assessment, with a direct link between itself and future mortality from colorectal cancer. There are a number of potential factors, both modifiable and non-modifiable that can impact upon ADR. As methods, understanding and technologies advance, so should our ability to improve ADRs, and thus, reduce colorectal cancer mortality. This article will review new technologies and techniques that improve ADR, both in terms of the endoscopes themselves and adjuncts to current systems. In particular it focuses on effective techniques and behaviours, developments in image enhancement, advancement in endoscope design and developments in accessories that may improve ADR. It also highlights the key role that continued medical education plays in improving the quality of colonoscopy and thus ADR. The review aims to present a balanced summary of the evidence currently available and does not propose to serve as a guideline.
基金Supported by the National Natural Science Foundation of China under Grant Nos. 10775097 and 10874174
文摘Using the technique of integration within an antinormally ordered product of operators we present a convenient approach for deriving some new operator identities in quantum optics theory. Based on P-representation we also derive a new formula for evaluating photocount distribution.
基金Henan Provincial Science and Technology Key Project (024050019)~~
文摘The main morphological characteristics, producing area and growth characteristics of sixteen new varieties of Chinese white poplar (Populus tomentosa Carr. ) are reported, aiming at providing reference for breeding and extension of new varieties.
基金Supported by Major Scientific and Technological Project of Jiangxi Province(20114ABF03106)Achievements Transformation and Extension in Nanchang City(2013HZLL1005)the Great Transfer and Transformation Program of S&T Achievements in Jiangxi Province(20141BBI90001)~~
文摘In this paper, the characteristics and yield performance of new variety Xi-angyou196 were introduced, and its high-yielding cuItivation techniques were summa-rized, finally, the corresponding matching cuItivation techniques through experiment and demonstration were put forward.
文摘A special X-radiography,used in obtaining the deformed specimen grating in in-plane moire method is introduced.The density of gridline is up to 50 lines / mm.This method is suitable not only for the copy of grating in fiat surface but also for that in curved surface.From unfolding the copy and superposing it with a reference grating,the moire effect arises.By processing this moire fringes with the digital image processing unit, the strain distribution would be obtained.Furthermore,the u-and v-displacement fields could be separated by the optical processing of this copy.The measurment sensitivity and accuracy become better simultaneously because of the fringe multiplication.Thus,this method makes it possible to measure the elastic-plastic strain precisely in any developable curved surfaces,for example, the surface of shaft,rotary-wing,cylindrical shell and cone shell etc.
文摘The frontalis suspension technique, which is a well-known surgical procedure, has been used for congenital ptosis for many years [1]. Several autologous and foreign grafts or materials have been preferred for this suspension, such as collagen, tensor fascia lata, palmaris longus tendon, deep temporal fascia, catgut, prolene, silicone, stainless steel, and supramid suture . Each of these have their own advantages and disadvantages; however, the superficial temporal fascia has not been used for the frontalis suspension method before.
文摘This Special Issue of the Journal of Rock Mechanics and GeotechnicalEngineering (JRMGE) contains 13 papers prepared by internationalexperts on various general topics in geomechanics, rockmechanics and geotechnical engineering. It represents a usefulmix of theoretical developments, testing and practical applications.We present in the following brief details in the papers, alphabeticallyin accordance with the last name of the first author.Barla presents a review of tunneling techniques with emphasison the full-face method combining full-face excavation and facereinforcement by means of fiber-glass elements with a yieldcontrolsupport. This method has been used successfully in difficultgeologic conditions, and for a wide spectrum of ground situations.The validation of the method with respect to the Saint Martin LaPorte access adit along the LyoneTurin Base tunnel experiencingseverely squeezing conditions during excavation is also includedin the paper. The numerical modeling with consideration of therock mass time-dependent behavior showed a satisfactory agreementwith monitoring results.
基金Part research results of"Cementing bond packing upgrading and bionic well wall consolidation drilling fluid techniques"of a key CNPC project"New technology and method of drilling"(No.2011A-4207)
文摘Well cementing is an important step in petroleum engineering territory. Through many years study and research, China Nation Petroleum Corporation(abbreviated as CNPC) has made many good progresses in cementing process, and a series of cementing materials, cementing tools, and associated cementing techniques to them have been developed. Over the recent years, there have been significant improvements in application of single slurry system to super deep well, horizontal well, large displacement well and wells with large temperature span between cementing top and well bottom. Favorable results have been gained in field application of super high density cement slurry system and super low density cement slurry system. Application of conventional cementing tools and accessories has been the matured techniques, and breakthroughs have been made in liner hanger and swellable material.
文摘A new breeding program"Creating new middle breedingmaterials by utilizing new techniques",cooperated byChina National Rice Research Institute (CNRRI)andJapan International Research Center for Agricultural Sci-ence(JIRCAS)",started in Hangzhou,China in 1999.
文摘After 8 yrs lab experiments and field tests, an advanced technique for identifying varieties resistance to rice blast was developed by a research group in Plant Protection Institute, Zhejiang Academy of Agricultural Sciences. With this technique, the inoculum was prepared on a maize-rice-straw-agar media which was suitable for sporulation of most rice blast pathogen isolates. To avoid possible virulence variation during the vegetative growth, the conidia were harvested and preserved for later different sets of resistance evaluation tests. A simple and precise new method—smear inoculation was used for infection. The experi-
文摘To introduce a safe,effective and lasting rhytidectomy technique without destroying the configuration of sideburns.Methods The operation is performed through the coronal incision,the temporal incision that is paralleled to the nasolabial sulcus,and the preauricular incision in the sideburns.Multi-layer dissection of facial tissue is made.Results 46 patints with aging face have been treated using this technique since 2002.All patinets obtained good curative effects without any severe complications.Conclusion This operation technique may maintain the natural configuration of the preauricular area and sideburns,result obscure incision scar and avoid harming important nerves or vessels.Multi-layer dissection accords with anatomical principles and produces a lasting curative effect.6 refs,2 figs.
文摘With the application of new techniques, materials and technologies in West East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding up the development and improvement of the strength as a whole in aspects of smelting industry, pipe fabrication, pipeline construction and equipment manufacture,making China’s pipeline industry catch up with the trend of development of the world advanced level.
文摘A new technique for solving large deflection problem of circular plates flexural non-axisymmetrically is proposed in this paper. The large deflection problem of a circular plate with built-in edge under non-axisymmetrical load is taken as an example to clarify the principle and procedure of the technique mentioned here. The technique given here can also be used to solve large deflection problem of circular plates under other non-axisymmetrical loads and boundary conditions.