Books on the topic 'Techniques de double hybride'

Double ionisation of most of the experimentally accessible diatomic molecules has been studied previously by several techniques, including Auger spectroscopy, double electron transfer, kinetic energy release, and high-level theory. New double photoionisation spectra of HBr, HI, N2, CO, NO, O2, Br2, ICl, and I2 are presented here with analysis to identify the electronic states of the doubly charged ions. A simple empirical model is introduced to estimate double ionisation energies on the basis of orbital energies. For CO, NO, and O2, an indirect double ionisation mechanism is found, involving dissociation of a singly charged molecular ion followed by atomic autoionisation of one fragment. Energies of the dication states are listed with distinction between adiabatic and vertical values.

Pre-assessment of patients for thoracic surgery with prediction of postoperative dyspnoea is important and may determine ‘operability’ of malignancy. Anaesthetic conduct for common thoracic surgical procedures such as thoracotomy, video-assisted thorascopic surgery, mediastinal surgery, and bronchoscopic techniques are described. Techniques for providing one-lung ventilation using double-lumen tubes or endobronchial blockers are discussed along with the physiology of one-lung ventilation, hypoxic vasoconstriction, and techniques to improve oxygenation. Thoracic postoperative care such as pain and chest drain management is included

Bones are multifunctional passive organs of movement that supports soft tissue and directly attached muscles. They also protect internal organs and are a reserve of calcium, phosphorus and magnesium. Each bone is covered with periosteum, and the adjacent bone surfaces are covered by articular cartilage. Histologically, the bone is an organ composed of many different tissues. The main component is bone tissue (cortical and spongy) composed of a set of bone cells and intercellular substance (mineral and organic), it also contains fat, hematopoietic (bone marrow) and cartilaginous tissue. Bones are a tissue that even in adult life retains the ability to change shape and structure depending on changes in their mechanical and hormonal environment, as well as self-renewal and repair capabilities. This process is called bone turnover. The basic processes of bone turnover are: • bone modeling (incessantly changes in bone shape during individual growth) following resorption and tissue formation at various locations (e.g. bone marrow formation) to increase mass and skeletal morphology. This process occurs in the bones of growing individuals and stops after reaching puberty • bone remodeling (processes involve in maintaining bone tissue by resorbing and replacing old bone tissue with new tissue in the same place, e.g. repairing micro fractures). It is a process involving the removal and internal remodeling of existing bone and is responsible for maintaining tissue mass and architecture of mature bones. Bone turnover is regulated by two types of transformation: • osteoclastogenesis, i.e. formation of cells responsible for bone resorption • osteoblastogenesis, i.e. formation of cells responsible for bone formation (bone matrix synthesis and mineralization) Bone maturity can be defined as the completion of basic structural development and mineralization leading to maximum mass and optimal mechanical strength. The highest rate of increase in pig bone mass is observed in the first twelve weeks after birth. This period of growth is considered crucial for optimizing the growth of the skeleton of pigs, because the degree of bone mineralization in later life stages (adulthood) depends largely on the amount of bone minerals accumulated in the early stages of their growth. The development of the technique allows to determine the condition of the skeletal system (or individual bones) in living animals by methods used in human medicine, or after their slaughter. For in vivo determination of bone properties, Abstract 10 double energy X-ray absorptiometry or computed tomography scanning techniques are used. Both methods allow the quantification of mineral content and bone mineral density. The most important property from a practical point of view is the bone’s bending strength, which is directly determined by the maximum bending force. The most important factors affecting bone strength are: • age (growth period), • gender and the associated hormonal balance, • genotype and modification of genes responsible for bone growth • chemical composition of the body (protein and fat content, and the proportion between these components), • physical activity and related bone load, • nutritional factors: – protein intake influencing synthesis of organic matrix of bone, – content of minerals in the feed (CA, P, Zn, Ca/P, Mg, Mn, Na, Cl, K, Cu ratio) influencing synthesis of the inorganic matrix of bone, – mineral/protein ratio in the diet (Ca/protein, P/protein, Zn/protein) – feed energy concentration, – energy source (content of saturated fatty acids - SFA, content of polyun saturated fatty acids - PUFA, in particular ALA, EPA, DPA, DHA), – feed additives, in particular: enzymes (e.g. phytase releasing of minerals bounded in phytin complexes), probiotics and prebiotics (e.g. inulin improving the function of the digestive tract by increasing absorption of nutrients), – vitamin content that regulate metabolism and biochemical changes occurring in bone tissue (e.g. vitamin D3, B6, C and K). This study was based on the results of research experiments from available literature, and studies on growing pigs carried out at the Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences. The tests were performed in total on 300 pigs of Duroc, Pietrain, Puławska breeds, line 990 and hybrids (Great White × Duroc, Great White × Landrace), PIC pigs, slaughtered at different body weight during the growth period from 15 to 130 kg. Bones for biomechanical tests were collected after slaughter from each pig. Their length, mass and volume were determined. Based on these measurements, the specific weight (density, g/cm3) was calculated. Then each bone was cut in the middle of the shaft and the outer and inner diameters were measured both horizontally and vertically. Based on these measurements, the following indicators were calculated: • cortical thickness, • cortical surface, • cortical index. Abstract 11 Bone strength was tested by a three-point bending test. The obtained data enabled the determination of: • bending force (the magnitude of the maximum force at which disintegration and disruption of bone structure occurs), • strength (the amount of maximum force needed to break/crack of bone), • stiffness (quotient of the force acting on the bone and the amount of displacement occurring under the influence of this force). Investigation of changes in physical and biomechanical features of bones during growth was performed on pigs of the synthetic 990 line growing from 15 to 130 kg body weight. The animals were slaughtered successively at a body weight of 15, 30, 40, 50, 70, 90, 110 and 130 kg. After slaughter, the following bones were separated from the right half-carcass: humerus, 3rd and 4th metatarsal bone, femur, tibia and fibula as well as 3rd and 4th metatarsal bone. The features of bones were determined using methods described in the methodology. Describing bone growth with the Gompertz equation, it was found that the earliest slowdown of bone growth curve was observed for metacarpal and metatarsal bones. This means that these bones matured the most quickly. The established data also indicate that the rib is the slowest maturing bone. The femur, humerus, tibia and fibula were between the values of these features for the metatarsal, metacarpal and rib bones. The rate of increase in bone mass and length differed significantly between the examined bones, but in all cases it was lower (coefficient b <1) than the growth rate of the whole body of the animal. The fastest growth rate was estimated for the rib mass (coefficient b = 0.93). Among the long bones, the humerus (coefficient b = 0.81) was characterized by the fastest rate of weight gain, however femur the smallest (coefficient b = 0.71). The lowest rate of bone mass increase was observed in the foot bones, with the metacarpal bones having a slightly higher value of coefficient b than the metatarsal bones (0.67 vs 0.62). The third bone had a lower growth rate than the fourth bone, regardless of whether they were metatarsal or metacarpal. The value of the bending force increased as the animals grew. Regardless of the growth point tested, the highest values were observed for the humerus, tibia and femur, smaller for the metatarsal and metacarpal bone, and the lowest for the fibula and rib. The rate of change in the value of this indicator increased at a similar rate as the body weight changes of the animals in the case of the fibula and the fourth metacarpal bone (b value = 0.98), and more slowly in the case of the metatarsal bone, the third metacarpal bone, and the tibia bone (values of the b ratio 0.81–0.85), and the slowest femur, humerus and rib (value of b = 0.60–0.66). Bone stiffness increased as animals grew. Regardless of the growth point tested, the highest values were observed for the humerus, tibia and femur, smaller for the metatarsal and metacarpal bone, and the lowest for the fibula and rib. Abstract 12 The rate of change in the value of this indicator changed at a faster rate than the increase in weight of pigs in the case of metacarpal and metatarsal bones (coefficient b = 1.01–1.22), slightly slower in the case of fibula (coefficient b = 0.92), definitely slower in the case of the tibia (b = 0.73), ribs (b = 0.66), femur (b = 0.59) and humerus (b = 0.50). Bone strength increased as animals grew. Regardless of the growth point tested, bone strength was as follows femur > tibia > humerus > 4 metacarpal> 3 metacarpal> 3 metatarsal > 4 metatarsal > rib> fibula. The rate of increase in strength of all examined bones was greater than the rate of weight gain of pigs (value of the coefficient b = 2.04–3.26). As the animals grew, the bone density increased. However, the growth rate of this indicator for the majority of bones was slower than the rate of weight gain (the value of the coefficient b ranged from 0.37 – humerus to 0.84 – fibula). The exception was the rib, whose density increased at a similar pace increasing the body weight of animals (value of the coefficient b = 0.97). The study on the influence of the breed and the feeding intensity on bone characteristics (physical and biomechanical) was performed on pigs of the breeds Duroc, Pietrain, and synthetic 990 during a growth period of 15 to 70 kg body weight. Animals were fed ad libitum or dosed system. After slaughter at a body weight of 70 kg, three bones were taken from the right half-carcass: femur, three metatarsal, and three metacarpal and subjected to the determinations described in the methodology. The weight of bones of animals fed aa libitum was significantly lower than in pigs fed restrictively All bones of Duroc breed were significantly heavier and longer than Pietrain and 990 pig bones. The average values of bending force for the examined bones took the following order: III metatarsal bone (63.5 kg) <III metacarpal bone (77.9 kg) <femur (271.5 kg). The feeding system and breed of pigs had no significant effect on the value of this indicator. The average values of the bones strength took the following order: III metatarsal bone (92.6 kg) <III metacarpal (107.2 kg) <femur (353.1 kg). Feeding intensity and breed of animals had no significant effect on the value of this feature of the bones tested. The average bone density took the following order: femur (1.23 g/cm3) <III metatarsal bone (1.26 g/cm3) <III metacarpal bone (1.34 g / cm3). The density of bones of animals fed aa libitum was higher (P<0.01) than in animals fed with a dosing system. The density of examined bones within the breeds took the following order: Pietrain race> line 990> Duroc race. The differences between the “extreme” breeds were: 7.2% (III metatarsal bone), 8.3% (III metacarpal bone), 8.4% (femur). Abstract 13 The average bone stiffness took the following order: III metatarsal bone (35.1 kg/mm) <III metacarpus (41.5 kg/mm) <femur (60.5 kg/mm). This indicator did not differ between the groups of pigs fed at different intensity, except for the metacarpal bone, which was more stiffer in pigs fed aa libitum (P<0.05). The femur of animals fed ad libitum showed a tendency (P<0.09) to be more stiffer and a force of 4.5 kg required for its displacement by 1 mm. Breed differences in stiffness were found for the femur (P <0.05) and III metacarpal bone (P <0.05). For femur, the highest value of this indicator was found in Pietrain pigs (64.5 kg/mm), lower in pigs of 990 line (61.6 kg/mm) and the lowest in Duroc pigs (55.3 kg/mm). In turn, the 3rd metacarpal bone of Duroc and Pietrain pigs had similar stiffness (39.0 and 40.0 kg/mm respectively) and was smaller than that of line 990 pigs (45.4 kg/mm). The thickness of the cortical bone layer took the following order: III metatarsal bone (2.25 mm) <III metacarpal bone (2.41 mm) <femur (5.12 mm). The feeding system did not affect this indicator. Breed differences (P <0.05) for this trait were found only for the femur bone: Duroc (5.42 mm)> line 990 (5.13 mm)> Pietrain (4.81 mm). The cross sectional area of the examined bones was arranged in the following order: III metatarsal bone (84 mm2) <III metacarpal bone (90 mm2) <femur (286 mm2). The feeding system had no effect on the value of this bone trait, with the exception of the femur, which in animals fed the dosing system was 4.7% higher (P<0.05) than in pigs fed ad libitum. Breed differences (P<0.01) in the coross sectional area were found only in femur and III metatarsal bone. The value of this indicator was the highest in Duroc pigs, lower in 990 animals and the lowest in Pietrain pigs. The cortical index of individual bones was in the following order: III metatarsal bone (31.86) <III metacarpal bone (33.86) <femur (44.75). However, its value did not significantly depend on the intensity of feeding or the breed of pigs.

After very brief historical notes, the basis of the TOF-PEPECO technique is explained and other techniques for spectra of doubly charged positive ions are described and compared with this modern method. The meaning of ionisation energies in the context of molecular double ionisation is discussed, with their relationship to electron orbital configurations. With the advent of photoelectron spectroscopy in the 1960s, new techniques allowed complete spectra of valence electron ionisations for each molecule to be revealed in a single measurement. The effects on the spectra of the different major pathways from starting molecules to final doubly ionised states are explained. Details of the experiments are given, including pulsed lamps, synchrotron radiation as light sources, and the magnetic bottle time-of-flight electron spectrometer.

Molecular biology is the story of the molecules of life, their relationships, and how these interactions are controlled. ‘Early milestones’ first explores two key ideas in the early history of molecular biology that provided inspiration at the start of the hunt for the molecular nature of the transmissible factors that provide continuity of life: evolution by natural selection as proposed by Charles Darwin and Alfred Russel Wallace; and Gregor Mendel’s work on heritable factors. The evolution of ideas and the development of techniques that led to the key finding of the double helix structure of DNA by James Watson and Francis Crick in 1953 are also described.

Cell structures and metabolic processes are specified by genes. The genomes of bacteria, archaea, and eukaryotic microorganisms are encoded in double-stranded helices of DNA. ‘Genetics and molecular microbiology’ explains that advances in sequencing techniques and the development of automated sequencing methods have allowed scientists to sequence the genomes of 4,000 bacterial genomes, 200 archaea, and 200 eukaryotes. Genome sizes vary a great deal within each category of microorganism and the largest prokaryote genomes overlap the smallest eukaryote genomes. Natural mutations in microorganisms play a primary role in evolution. Reproduction in prokaryotes is always asexual, whereas mechanisms of sexual reproduction have been studied in eukaryotic microorganisms belonging to all of the supergroups.

Epigraphy and palaeography are ways of recording, analyzing, and interpreting texts and images. This Handbook discusses technical issues about recording text and art and interpretive questions about what we do with those records and why we do it. The Handbook aims to • discuss current theories with regard to the cultural setting and material realities in which Egyptian epigraphy was produced;• familiarize the reader with epigraphic techniques and practices; and• outline and review traditional and emerging techniques and challenges as a guide for future research. The chapters offer a diachronic perspective, covering all Egyptian scripts from prehistoric through Coptic, a look at recording techniques that considers past, present, and future, and a focus on colleagues’ experiences. The diachronic perspective illustrates the range of techniques used to record different phases of writing in different media. The consideration of past, present, and future techniques allows readers to understand why particular strategies are or were employed by linking the aims of an effort with the chosen technique. The choice of techniques is a matter of goals and the records’ work circumstances, an inevitable consequence of epigraphy being a double projection: geometrical, transcribing in two dimensions an object that exists physically in three, and mental, an interpretation, with an inevitable selection among the object’s defining characteristics. Colleagues’ experiences provide a range of perspectives and opinions. These accounts are interesting and instructive stories of innovation in the face of scientific conundrum.

All cultures have their specific ways of constructing their flutes, which fit within their particular and usually unwritten music theories, aesthetics, and practices. Folktales and mythology, like music iconography, however, offer very little reliable descriptive information about flute construction techniques or even flutes as material objects; artistic license, such as exaggeration, understatement, ambiguity, hyperbole, deception, exists in both the narrative and visual arts. To understand why cultures construct their flutes in the ways they do, the narrative arts with their use of metaphor, symbolism, double entendre, and other ways of saying (and writing or singing) things often provide indigenous perspectives about processes, including flute construction. This chapter discusses the construction of some world flutes in three case studies: the Warao of Venezuela, the Buganda of Uganda, and the Japanese.

Using household data from the latest wave of the Ghana Living Standards Survey, this paper utilizes machine learning techniques to examine the effect of gender wage differences within households on women’s empowerment and welfare in Ghana. The structural parameters of the post-double selection LASSO estimations show that a reduction in household gender wage gap significantly enhances women’s empowerment. Also, a decline in household gender wage gap results meaningfully in improving household welfare. Particularly, the increasing effect on women’s welfare resulting from decreases in household gender wage differences is much higher than for the household welfare. The findings showcase the need to vigorously adopt policies that both increase the quantity and quality of jobs for women and address gender barriers that inhibit women from accessing these jobs opportunities in sub-Saharan Africa.

This chapter examines how forensic science and technology are reshaping crime investigation, prosecution, and the administration of criminal justice. It highlights the profound effect of new scientific techniques, data collection devices, and mathematical analysis on the traditional criminal justice system. These blur procedural boundaries that have hitherto been central, while automating and procedurally compressing the entire criminal justice process. Technological innovation has also resulted in mass surveillance and eroded ‘double jeopardy’ protections due to scientific advances that enable the revisiting of conclusions reached long ago. These innovations point towards a system of ‘automatic justice’ that minimizes human agency and undercut traditional due process safeguards that have hitherto been central to the criminal justice model. To rebalance the relationship between state and citizen in a system of automatic criminal justice, we may need to accept the limitations of the existing criminal procedure framework and deploy privacy and data protection law.

As the sequel to a translation of a translation, Xu Nianci’s “New Tales of Mr. Braggadocio” is a case study in the linguistic negotiations central to Lydia Liu’s reflections on translation. The story is marked by a double consciousness through which the narrator’s body and soul explore alternate explanations for evolution and scientific knowledge, thus engaging in many of the thematic and historical hallmarks of colonial modernity, situated at the junction of a number of intellectual realms. Thematically and linguistically, the text suggests a number of potential points of resistance to western epistemology, attempting to subsume science under the umbrella of Daoist cosmology. Especially prominent in the story is the degree to which the narrator’s resistance to Western science contrasts with his ready appropriation of the tenets of capitalist accumulation of wealth as his success in perfecting the techniques of “brain electricity” ultimately results in a global economic crisis.

This chapter covers the spectrum of routine monitoring, audit, service evaluation, and formal research. Routine monitoring is an essential task for all mental health professionals, and techniques to make it more palatable are explored, including using routine data for clinical supervision and monitoring team targets. Regular audit is described as an essential tool for logical service development and quality improvement. In the discussion of research, the importance of choosing the correct methodology and of paying attention to detail are stressed. In community psychiatry, sampling bias, regression to the mean, and the Hawthorne effect pose important risks. The hierarchy of research methods is outlined with randomized controlled trials (RCTs) at the top, preferably with either single- or double-blinding. Careful statistics and systematic reviews support evidence-based practice. In addition to experimental quantitative trials, there is a place for cohort and case control trials, as well as for qualitative trials to generate hypotheses.

After briefly presenting (for the physicist) some notions frequently used in combinatorics (such as graphs or combinatorial maps) and after briefly presenting (for the combinatorialist) the main concepts of quantum field theory (QFT), the book shows how algebraic combinatorics can be used to deal with perturbative renormalisation (both in commutative and non-commutative quantum field theory), how analytic combinatorics can be used for QFT issues (again, for both commutative and non-commutative QFT), how Grassmann integrals (frequently used in QFT) can be used to proCve new combinatorial identities (generalizing the Lindström–Gessel–Viennot formula), how combinatorial QFT can bring a new insight on the celebrated Jacobian conjecture (which concerns global invertibility of polynomial systems) and so on. In the second part of the book, matrix models, and tensor models are presented to the reader as QFT models. Several tensor model results (such as the implementation of the large N limit and of the double-scaling limit for various such tensor models, N being here the size of the tensor) are then exposed. These results are natural generalizations of results extensively used by theoretical physicists in the study of matrix models and they are obtained through intensive use of combinatorial techniques (this time mainly enumerative techniques). The last part of the book is dedicated to the recently discovered relation between tensor models and the holographic Sachdev–Ye–Kitaev model, model which has been extensively studied in the last years by condensed matter and by high-energy physicists.

Over the past 70 years since the introduction of d-tubocurarine, the search for an ideal neuromuscular blocking agent has led to the development of the depolarizing drug, succinylcholine (suxamethonium), with its rapid onset of action and plasma metabolism, and a series of non-depolarizing agents of which there are two groups: benzylisoquinoliniums (e.g. atracurium, cisatracurium and mivacurium) and aminosteroidal agents (e.g. pancuronium, vecuronium and rocuronium). The need to monitor neuromuscular block perioperatively to ensure the appropriate dose of any neuromuscular blocking drug is given has led to the development of several nerve stimulation techniques. Particularly useful clinically are the train-of-four twitch response, double-burst stimulation, and the post-tetanic count. Their benefits and limitations are considered in this chapter. The most suitable equipment to monitor neuromuscular block and the appropriate anatomical sites for stimulation are discussed. To prevent residual block with its pathophysiological consequences such as upper airway and pharyngeal dysfunction and potential respiratory failure at the end of surgery, antagonizing agents are used. These are of two types: anticholinesterases such as neostigmine and edrophonium, and the γ‎-cyclodextrin, sugammadex. The pharmacodynamics and pharmacokinetics of neuromuscular blocking drugs and their antagonists are altered by the extremes of age, obesity, and several disease states including renal and hepatic failure, neuromuscular disorders, and critical illness. The altered response to all these drugs in these pathologies, which is related to their metabolism and excretion, is considered in detail, together with their other side-effects including the particular disadvantages to the use of succinylcholine.