Academic literature on the topic 'CU 3000'

Abstract Reliability of wire bonds made with palladium-coated copper (PCC) wire of 25 μm diameter is studied by measuring the wire bond resistance increase over time in high temperature storage at 225 °C. Ball bonds are made on two bond pad thicknesses and tested with and without mold compound encapsulation. Bond pads are aluminum copper (Al-0.5%Cu), 800 nm and 3000 nm thick. The wirebonding pattern is arranged to facilitate 4-wire resistance measurements of 12 bond pairs in each 28-pin ceramic test package. The ball bonding recipe is optimized to minimize splash on 3000 nm Al-0.5%Cu with shear strength at least 120 MPa. Ball bond diameter is 61 μm and height is 14 μm. Measurements include bond shear test data and in-situ resistance before and during high temperature storage. Bonds on 3000 nm pads are found to be significantly more reliable than bonds on 800 nm pads within 140 h of aging.

Abstract The Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) is a powerful, highly reliable and selective reaction which allows for a rapid synthesis in high yields and under mild conditions (pH, temperature). However, the cytotoxicity of copper requires its complete removal prior to an application in vivo. This is an issue especially when it comes to CuAAC reactions on macromolecular structures or drug delivery systems, as copper might be retained by these systems. Thus, a quantification of the final copper content of these systems is inevitable, which we exemplified for a CuAAC reaction on liposomes using 64Cu-spiked Cu(I). In this respect, a Cu(II) nitrate solution was irradiated at the TRIGA Mark II research reactor Mainz to obtain c.a. [64Cu]Cu(II). The irradiated solution was directly used for a CuAAC on liposomes. After purification, their copper content was calculated utilizing γ-ray spectrometry. Only 0.018% of the added 64Cu-activity was still present in the liposome containing fractions after purification. This refers to a total amount of copper of 0.17 ng. The amount of retained copper is so low, that an in vivo application of the liposomes is absolutely reasonable. Besides this particular study, the experimental methodology may be applied to study many other CuAAC reactions, used for the synthesis of radiolabeled or non-radioactive species, which are intended for human applications.

Penelitian ini bertujuan untuk menganalisa pengaruh perubahan parameter proses terhadap kekerasan, kuat tarik, dan struktur mikro alumunium matrix composite (AMC) dengan komposisi Al5%Cu-12%Mg-15%SiC setelah melalui proses perubahan varian kecepatan putar, dimana kecepatan stir casting adalah 1000, 2000 dan 3000 rpm. Dari hasil pengujian didapatkan nilai kekerasan tertinggi dicapai pada kecepatan putar 3000 rpm yaitu 105,6 BH dan nilai kuat tarik tertinggi dicapai pada putaran 2000 rpm yaitu 72,7 N/mm2, dan hasil pengamatan struktur mikro menunjukan penguat unsur C, Mg dan SiC lebih merata pada kecepatan putar 2000 dan 3000 rpm. Dari perbedaan perubahan nilai kekerasan, kuat tarik dan struktur mikro tersebut membuktikan bahwa terdapat pengaruh parameter proses perubahan kecepatan putar stir casting terhadap nilai kekerasan, kuat tarik dan struktur mikro AMC.

A series of zero-valent Pd complexes featuring PMP ligands (M = Li^I, Cu^I, Zn^II) is reported. An excellent activity in chemoselective CO₂ hydrosilylation producing silyl formate is observed (TOF_1/2 = 3000 h⁻¹).

Molecular dynamics simulations of Ni₃₆Zr₆₄, Cu₆₅Zr₃₅ and Ni₈₀Al₂₀ were carried out over a broad range of temperature (900–3000 K) to investigate the Stokes–Einstein (SE) relation for glass-forming melts.

We introduce a novel containerless melt-spin processing technique for YBa2Cu3O7−x using prereacted oxide powders that are rapidly melted and subsequentially quenched in a controlled atmosphere. This results in flakes with typical dimensions of 3000 × 150 × 15 μm3. Powder XRD indicates that all samples contain Y2O3, but that the Ba–Cu–O phases present depend on the processing parameters. SEM and TEM studies show these phases are finely dispersed: the typical grain size for Y2O3 is 1–2 μm, and for the Ba–Cu–O phases it is <0.5 μm.

A high-current (~100 nA) cluster-ion-beam equipment with a new mass filter has been developed to study the energetic cluster-bombardment effects on solid surfaces. A dramatic reduction of Cu concentration on silicon surfaces has been achieved by 20-keV Ar cluster (N~3000) ion bombardment. The removal rate of Cu with cluster ions is two orders of magnitude higher than that with monomer ions. A significantly higher sputtering yield is expected for cluster-ion irradiation. An energetic cluster-ion beam is quite suitable for removal of metal.

Nanosized Cu-enriched clusters formed in Cu-containing reactor pressure vessel (RPV) steels during service have a deleterious effect on mechanical properties, which can result in RPV embrittlement and limit reactor operation life. To understand the effect of Cu-enriched clusters (CECs) behavior on mechanical properties, thermal aging at 370°C for times up to 13200 h was performed on the high-copper ferritic steels. The microstructure evolution of CECs was investigated by positron annihilation spectroscopy (PAS) and transmission electron microscope (TEM). The results show that the CECs formed after aging times up to 3000 h, which composition is composed of Fe, Cu, Ni, Mn, and Si, are 9R structures. The CECs lead to precipitation hardening/embrittlement effects. The changes of hardness have a linear relationship with transition temperature shifts.

This paper comprehensively describes the fabrication method and shear strength reliability of a eutectic Zn-Al (m.p. = 382°C) attachment system, built by soldering SiC dies (2×2 mm2) onto Cu foil active-metal-brazed with a SiN ceramic plate. Four essential soldering conditions are presented and discussed for the formation of a strong and reproducible attachment. Die shear strength reliability data at Tj = 250°C are reported here for the first time. Storage tests at 250°C revealed that, after an initial slight decline, die shear strength stayed virtually constant at a sufficient level (∼110 MPa) for at least 3000 hours. Thermal cycle test results indicated that the attachments can withstand thermal cycle stress for 3000 cycles between −40°C and 250°C. The average die shear strength after 3000 cycles was 18.5 MPa, a value that is three times higher than the IEC standard of 6.2 MPa specified in Document 60749-19.

The effects of pH and Cu loading on the solid/solution partitioning of Cu in a Podosol from south-east Queensland, Australia was examined. Sorption–desorption of Cu exhibited maximum linear distribution coefficients (KD) at approximately pH 5. Observed decrease in KD values at pH >5 was attributed to increased solubility of native dissolved organic carbon (DOC) at higher pH and subsequent formation of non-sorbing Cu–DOC complexes. Speciation modelling with the MINTEQA2 code indicated that >90% of aqueous Cu was present as Cu–DOC complexes at pH >5.5. The effect of Cu loading was examined with sorption isotherm analysis at pH 5 using solid : solution ratio approaches that were both constant (1 : 2 and 1 : 10) and variable. As the solid : solution ratio increased, the proportion of Cu sorbed decreased due to the formation of Cu-DOC complexes. However, this effect was negligible once these Cu–DOC complexes were accounted for via free Cu2+ sorption isotherms. This indicated that Cu2+ sorption at concentrations <0.08 mg/L was described by a KD value of approximately 3000 L/kg. Despite this relatively high KD value for Cu2+ sorption, the results indicate that Cu–DOC complexes significantly enhance Cu solubility in soils high in DOC.

Mit der vorliegenden Arbeit sollte die Anwendbarkeit mobiler psychophysiologischer Meßmethoden unter psychosomatischen Therapiebedingungen erprobt werden. Bei Patienten einer psychosomatischen Station wurde mit Hilfe des portablen Blutdruckmeßgeräts SpaceLabs[tm] der Blutdruck gemessen. Außerdem zeichnete das Vitaport[tm]-Gerät, das ebenfalls portabel ist, verschiedene Biosignale auf. Parallel gaben die Patienten Stimmungen und Beschwerden in einen Palmtop-Computer (Psion[tm]3) ein. Sie nahmen bei laufender Messung an verschiedenen, in der Abteilung routinemäßig eingesetzten Psychotherapiesitzungen teil. Es traten methodische Probleme auf: Die Bewegungsaktivität der Patienten beeinflußte die Meßergebnisse besonders des EMGs. Atemfrequenz und Hautleitwert konnten mit der zur Verfügung stehenden Software nicht ökonomisch ausgewertet werden. Die Aufzeichnung der psychologischen Daten war problemlos, allerdings erwies sich die Erfassung von Stimmungen und Beschwerden vor und nach der Therapie als zu unsensibel auf Veränderungen. Auch auf dem bisherigen probatorischen Niveau ließen sich inhaltliche Ergebnisse darstellen: Während der tiefenpsychologisch fundierten Einzelgesprächstherapie waren die systolischen Blutdruckwerte höher als bei den anderen Therapieformen. Gleichzeitig war der Ärger signifikant niedriger. Dies weist auf eine besondere Perzeption der Einzeltherapie hin. Die Funktionelle Entspannung wies gegen Ende der Therapiephase auffällig niedrige Herzfrequenzwerte auf, was zu der theoretisch angestrebten Entspannung am Ende der Therapie passen könnte. Patienten mit psychoneurotischen Störungen hatten eine höhere Herzfrequenz in Ruhe. Dies spricht nach psychophysiologischem Verständnis für einen höheren Grad von Anspannung. Diese Patienten reagierten auf Musiktherapie mit Entspannung; für Patienten mit Somatisierungsstörungen stellte die Kunsttherapie den stärksten aversiven Reiz dar. Mit den mobilen psychophysiologischen Meßmöglichkeiten könnte in Zukunft eine Methode heranwachsen, die eine sinnvolle Erweiterung der bisher eng umgrenzten Therapieevaluationsmöglichkeiten darstellt.
The purpose of this trial was to test mobile psychophysiological measurment techniques during psychosomatical therapy. SpaceLabs[tm] measured the blood pressure of psychosomatical patients, and Vitaport[tm] recorded biological signals including electromyogram, pulse, skin-conductance, breathing-frequency and motile activity. Patients entered their moods and discomforts using a Psion[tm]3 palmtop computer. During the measurement patients took part in the routine meetings in the psychotherapy ward. There were some problems with the methodology: The motile activity of patients affected the measurement, particularly with respect to the electromyogram. Breathing frequency and skin conductance could not be evaluated economically using the existing software. Psychological parameters were easy to measure, however the before-and after-therapy-measurement was not sensitive enough to detect any changes. Although the purpose of this trial was only to explore the possibility of measurement, there were some results with respect to the content: During the individual’s psychoanalytical therapy higher blood-pressure and less anger were recorded than during all other therapies. That could have resulted from a special perception of the therapy. At the end of "Funktionelle Entspannung" (functional relaxation), pulse rates were generally low. That could be explained by the relaxation, that is the theoretical aim of this therapy. Patients with psychoneurotical diseases had higher pulse rates during repose, perhaps due to a higher level of tension. These patients tended to relax during music therapy. Patients with somatisations, tended to have strong aversions to art therapy. In conclusion, mobile psychophysiological measurement could become a effective way to evaluate therapy.

Die Research-Domain-Criteria-Initiative und andere haben vorgeschlagen, zur Konzeption psychischer Störungen dimensionale psychologische Konstrukte zu verwenden. Die vorliegende Arbeit beschreibt mehrere Experimente, in denen mit Augenbewegungsaufgaben das Konstrukt der kognitiven Kontrolle evaluiert wurde. Die Studien sollten klären, welche kognitiven und neuronalen Mechanismen zu den bei Menschen mit Schizophrenie oder Zwangsstörung erhöhten Latenzen volitionaler Sakkaden beitragen. In drei Studien wurden Anforderungen der Antisakkadenaufgabe isoliert und funktionelle Magnetresonanztomographie angewendet. Die Ergebnisse legen nahe, dass die verlangsamte volitionale Sakkadengenerierung bei Schizophrenie durch eine dysfunktionale Aktivierung des lateralen präfrontalen Cortex und der supplementären Augenfelder vermittelt wird, was mit Defiziten in der proaktiven Handlungskontrolle verbunden sein könnte. Fünf weitere Experimente sollten Teilprozesse aufklären und haben gezeigt, dass die Defizite möglicherweise aus einer Beeinträchtigung der volitionalen Loslösung der Fixation und der motorischen Vorbereitung resultieren. Zwei weitere Studien legen nahe, dass auch die Zwangsstörung mit erhöhten Latenzen volitionaler Sakkaden assoziiert ist. Effekte experimenteller Variation haben jedoch gezeigt, dass diesen Defiziten wahrscheinlich eine Verlangsamung der Reaktionsauswahl zugrundeliegt. Die bei beiden Patientengruppen vermutlich betroffenen Mechanismen dienen zielgerichteten Verhaltensweisen. Man kann vermuten, dass die Defizite eine Störung auf der Ebene eines allgemeinen Faktors exekutiver Funktionen widerspiegeln. Die experimentellen Ergebnisse weisen jedoch auch auf störungsspezifische Funktionsbeeinträchtigungen hin. Zukünftige Forschung muss den Zusammenhang zwischen diesen Beeinträchtigungen und Symptomen besser aufzuklären, wenn Konzepte psychischer Störungen, die auf experimentell definierten psychologischen Konstrukten basieren, am Ende erfolgreich sein sollen.
The research domain criteria initiative and others have suggested to conzeptualize mental disorders on the basis of dimensional psychological constructs. The present work describes several experiments using eye movement tasks to evaluate the construct of cognitive control. The studies aimed at uncovering cognitive and neural mechanisms involved in increased latencies of volitional saccades as found in individuals with schizophrenia or obsessive-compulsive disorder. Three studies used functional magnetic resonance imaging and isolated different demands of the antisaccade task. The results suggest that slowed volitional saccade generation in schizophrenia is mediated by dysfunctional activation of the lateral prefrontal cortex and the supplementary eye fields, which may relate to deficits in proactive control of action. Five additional behavioral experiments aimed at specifying sub-processes and showed that the deficits might result from impairments in volitional fixation disengagement and motor preparation. Two studies in individuals with obsessive-compulsive disorder suggest that this disorder is also associated with increased latencies of volitional saccades. However, experimental variation revealed that these deficits may reflect a slowing in response selection. The mechanisms affected in both groups are serving goal-directed behaviors and may reflect a disturbance on the level of a common executive functions factor. However, the experimental results also suggest disorder specific functional impairment. Future research will have to improve our understanding of the relationship between these impairments and symptoms if concepts based on experimentally defined psychological constructs shall be successful in the end.

Schwere psychische Erkrankungen wie Schizophrenie und affektive Störungen haben nicht nur einen erheblichen Einfluss auf das Leben der Patienten, sondern auch ihrer Bezugspersonen. Die Entdeckung der Lebensqualität und ihrer relevanten Faktoren für pflegende Angehörige von Patienten mit psychischen Erkrankungen hilft Gesundheitsfachkräften sowie dem System, besser mit pflegenden Angehörigen zusammenzuarbeiten. Außerdem hilft es den Pflegekräften, auf eine adaptive Weise mit Patienten umzugehen. Die Studie zielte darauf ab, die Belastung und Lebensqualität von Pflegekräften, ihre spezifischen Bedürfnisse und Bewältigungsstrategien zu identifizieren. Außerdem sollte ein neuer Fragebogen entwickelt werden, um die Lebensqualität der Pflegekräfte zu messen. Diese Studie wendet einen Mixed-Method-Ansatz mit drei explorativen, quantitativen und ergänzenden Phasen an. Die qualitative explorative Phase der Studie wurde mittels halbstrukturierter Interviews mit 45 Betreuern von Patienten mit Schizophrenie und affektiven Störungen durchgeführt. Die Daten wurden durch qualitative Inhaltsanalyse untersucht. Die quantitative Phase diente der Entwicklung und Validierung eines neuen Instruments zur Messung der Lebensqualität von Pflegekräften sowie der Bereitstellung von Hauptfragen des Interviews für die zusätzliche Phase der Studie. Die Ergänzungsphase der Studie wurde in halbstrukturierten Interviews mit 18 Betreuern von Patienten mit Schizophrenie sowie affektiven Störungen durchgeführt. Die Daten wurden mittels Grounded-Theory-Analyse untersucht. Die Ergebnisse der Studie ermittelten die Hauptbelastungen, denen die Pflegepersonen ausgesetzt waren. Darüber hinaus wurden durch die Entwicklung und Validierung eines neuen Fragebogens die wichtigsten Faktoren für die Lebensqualität aufgedeckt. Ergebnisse der Ergänzungsphase der Studie identifizierten das Kernkonzept der Pflegeerfahrung sowie deren Hauptkategorien. Außerdem werden verschiedene Arten von Bewältigungsstrategien vorgeschlagen, die die Pflegekräfte übernommen haben. Weiterhin zeigt diese Phase die Trajektorie von Pflegeerfahrung und Bewältigungsstrategien in verschiedenen Phasen der Erkrankung. Die Studie bietet einige Vorschläge für das System, Fachkräfte im Gesundheitswesen sowie Pflegekräfte an, um die Lebensqualität der Pflegekräfte zu verbessern und die Absicht zu vermindern, Patienten einem institutionellen Pflegezentrum anzuvertrauen.
Severe mental illnesses, such as schizophrenia and affective disorders, have a considerable impact on the lives of not only patients but also their caregivers. Discovering the quality of life and its contributing factors for family caregivers of patients with mental illnesses helps health-care professionals as well as the system to work better with family caregivers. Also, it helps the caregivers to cope with patients in an adaptive way. The study aimed to identify the burden and quality of life of caregivers, their specific needs and coping strategies. Also, it aimed to develop a new questionnaire to measure caregivers’ quality of life. This study applied a mixed-method approach with three exploratory, quantitative and supplementary phases. The qualitative exploratory phase of the study was conducted via semi-structured interviews with 45 caregivers of patients with schizophrenia and affective disorders. Data were analyzed through qualitative content analysis. The quantitative phase was designed to develop and validate a new instrument to measure caregivers’ quality of life as well as to provide main questions of the interview for the supplementary phase of the study. The supplementary phase of the study was conducted by semi-structured interviews with 18 caregivers of patients with schizophrenia and affective disorders. Data were analyzed by grounded theory analysis. Findings of the study identified main burdens that the caregivers endured; additionally, main factors which contributed to the quality of life were revealed by developing and validating a new questionnaire. Findings of the supplementary phase of the study identified the core concept of caregiving experience as well as its main categories. Also, it proposes different kinds of coping strategies that caregivers adopted. Furthermore, this phase shows the trajectory of caregiving experience and coping strategies in different phases of the illness. The study provides some suggestions for the system, health-care professionals as well as caregivers in order to increase caregivers’ quality of life and to lessen the intention to entrust patients to an institutional take care center.

In den Jahren 1992-1995 kamen ca. 35 Tausend bosnische Kriegsflüchtlinge nach Berlin und wurden vorübergehend geduldet. Nach Kriegsende 1995 sollten sie schnellstmöglich wieder zurückkehren. Traumatisierte und Ältere ohne Angehörige im Heimatland wurden weiterhin geduldet bis Bosnien-Herzegowina wieder aufgebaut ist. Doch der Wiederaufbau verlief schleppend. Mit dem Friedensvertrag von Dayton begannen nicht Frieden und Wiederaufbau, sondern die Konsolidierung der ethnischen Grenzen in demokratischen Strukturen. Deshalb sahen viele Flüchtlinge keine Möglichkeit in ihre Heimatorte zurückzukehren und versuchten ihre Rückkehr hinauszuschieben. Möglich war dies mithilfe der Attestierung einer kriegsbedingten Posttraumatischen Belastungsstörung und ihre psychotherapeutische Behandlung, die den Inhabenden und ihren Familienmitgliedern eine Aufenthaltsverlängerung ermöglichte und ab dem Jahr 2000 den Erhalt eines dauerhaften Aufenthaltstitels. Die Verbindung einer psychischen Krankheit und ihrer Psychotherapie mit einem Aufenthaltsrecht ist neu in der Geschichte des deutschen Ausländerrechts und obwohl Berliner Psychiater, Psychiaterinnen, Psychologinnen und Psychologen maßgeblich an der Schaffung der „Traumatisiertenregelung“ beteiligt waren, wurden ihre Atteste von der Berliner Verwaltung in Frage gestellt. In der Dissertation werden die Standpunkte der Flüchtlinge, Behandelnden und der Verwaltung dargelegt und ihre Interaktionen beschrieben.Die Rolle des Krankheitskonzeptes der Posttraumatischen Belastungsstörung wird als "boundary object" (Star/Griesemer 1989) untersucht. Der Schwerpunkt liegt auf den Lebenswelten und Taktiken der Flüchtlinge, sich in Berlin zurechtzufinden und Anerkennung und Verständnis für ihre Situation zu finden. Ihre Bedürfnisse wurden in einen psychotherapeutischen Bedarf übersetzt und damit den Berliner Psychotherapeutinnen und -therapeuten ein neues Betätigungs- und Professionalisierungfeld geboten, was kritisch hinterfragt wird.
From 1992 until 1995 about 35 thousand Bosnian war refugees fled to Berlin and were allowed to stay temporarily. After the end of the war in 1995 they were expected to leave as soon as possible. Traumatized persons and elderly without relatives in Bosnia had the possibility to prolong their visa until Bosnia is reconstructed. But the rebuilding process progressed only slowly. With the end of the war did not start the expected peace time and rebuilding but the consolidation of ethnic borders inside democratic structures. Therefore many refugees did not see a possibility to return to their property and tried to delay their return. This was possible with an medical statement certifying a war related posttraumatic stress disorder and their psychotherapeutic treatment. These medical statements ensured the extension of the visa for the concerned person and its family members. From 2000 onwards they could receive a permanent residence title. The connection of a mental illness and psychotherapy with residence entitlements is a novelty in the German aliens law. And despite the fact that psychiatrists and psychologists from Berlin were leading actors in the establishment of the „regularization of the traumatized“ their medical/psychological statements were impeached by the authorities. The dissertation describes the viewpoints of refugees, treating physicians and psychologists and the authorities and how they interact with each other. Additionally is the concept of posttraumatic stress disorder examined and discussed as „boundary object“ (Star/Griesemer 1989). An important aspect is the description of life worlds and tactics of the refugees to get along in Berlin, to gain respect and appreciation for their situation. Their needs were translated into a psychotherapeutic demand and this led to the invention of a new field of work and professionalization for psychotherapists in Berlin. This development is critically reflected.

Bumpless interconnects and ultra-thinning of 300 mm wafers for three-dimensional (3D) stacking technology has been studied [1, 2]. In our previous studies, wafer thinning effect using device wafers less than 10 μm was investigated [3, 4]. There was no change for the retention time before and after thinning even at 4 μm in thickness of DRAM wafer [5]. In this study, the behavior of Cu contamination on an ultra-thin Si stacked structure was investigated. Thinned Si wafers were intentionally contaminated with Cu on the backside and 250 °C of heating was carried out during the adhesive bonding and de-bonding processing. An approximately 200 nm thick damaged layer was formed at the backside of the Si wafer after thinning process and Cu particle precipitates ranged at 20 nm were observed by cross-sectional transmission electron microscopy (X-TEM). With secondary ion mass spectrometry (SIMS) and EDX analyses, Cu diffusion was not detected in the Si substrate, suggesting that the damaged layer prevents Cu diffusion from the backside.

Die Posttraumatische Belastungsstörung (PTBS) nach sexueller Gewalt in der Kindheit geht häufig mit komorbiden Symptomen einher. Kognitiv-behaviorale Therapien haben sich als effektiv in der Behandlung der PTBS erwiesen. Die Datenlage zur PTBS nach sexueller Gewalt in der Kindheit ist jedoch gering. In der vorliegenden Dissertation wurden Fragestellungen zur Diagnostik und Therapie der PTBS nach sexueller Gewalt verfolgt. In Schrift 1 werden die Ergebnisse einer ambulanten Assessmentstudie präsentiert, in der 28 Patientinnen wiederholt zum intrusiven Wiederleben befragt wurden. Mit durchschnittlich 75 Intrusionen und 24 Flashbacks pro Woche fand sich eine hohe Symptombelastung. Die Schriften 2, 3 und 4 beziehen sich auf eine randomisiert-kontrollierte Studie. Patientinnen (N=74) wurden randomsiert einer 12-wöchigen stationären DBT-PTBS oder einer treatment-as-usual Warteliste zugewiesen. Die Ergebnisse, die in Schrift 2 beschrieben sind, zeigen eine signifikante Reduktion der posttraumatischen Symptomatik mit einer großen Zwischengruppen-Effektstärke (g=1.35). In Schrift 3 wird dargestellt, dass die Effekte auf die posttraumatische Symptomatik in Bezug auf mehrere traumatische Ereignisse geringer sind als die Effekte in Bezug auf das am stärksten belastende Ereignis. Schrift 4 beinhaltet Ergebnisse zu der Inanspruchnahme psychiatrisch-psychotherapeutischer Behandlung und den assoziierten Kosten. Im Jahr vor der DBT-PTBS fanden sich im Mittel jährliche Pro-Kopf-Kosten von  18100 € und 57 stationäre Tage. Im Jahr nach der DBT-PTBS waren die Inanspruchnahme mit durchschnittlich 14 Tagen und die mittleren Kosten von 7233 € deutlich geringer. Zusammengefasst sprechen die Ergebnisse für eine hohe Effektivität der DBT-PTBS. Zudem scheint die DBT-PTBS mit einer Reduktion stationärer Tage und entsprechender Kosten einherzugehen. Die Ergebnisse zur Diagnostik deuten darauf hin, dass ein Teil der Symptomatik mit dem üblichen diagnostischen Vorgehen nicht erfasst wird.
Posttraumatic stress disorder (PTSD) with co-occurring severe psychopathology is a frequent sequel of childhood sexual abuse (CSA). Cognitive-behavioral therapy has been shown to be efficacious in treating PTSD, but there is only limited data regarding patients with PTSD related to CSA. This dissertation focused on both the assessment and the treatment of PTSD related to CSA. Paper 1 presents data from an ambulatory assessment study. Patients (N=28) were provided with electronic diaries for repeated real-time assessment of intrusions and flashbacks. They reported an average of 75 intrusions and 24 flashbacks during the week of assessment. Papers 2, 3, and 4 present data from a randomized controlled trial. Patients (N=74) were randomized to either a 12-week residential DBT-PTSD program or a treatment-as-usual wait list. The results for primary and secondary outcomes are shown in Paper 2. Data revealed a significant reduction of posttraumatic symptoms with a large between-group effect size (g=1.35). Paper 3 provides results on the impact of the definition of the index trauma. When the index trauma included multiple traumas, PTSD severity scores were significantly higher, and improvements from pre- to post-treatment were significantly lower, compared to when the index trauma was defined as the worst trauma. Paper 4 presents data on the utilization of mental health care. The mean total costs were 18000 €  per patient during the year before and  7233 € during the year after DBT-PTSD. The significant cost reduction was due to large reductions in inpatient treatment days (on average 57 days before and 14 days after DBT-PTSD). To sum up, the findings show clear evidence for the efficacy of the DBT-PTSD program. Data further indicate that DBT-PTSD might contribute to reducing the mental health care costs. Also, the results suggest that the currently applied methods of assessing PTSD in patients with severe symptoms might miss aspects of clinically relevant symptomatology.

Das Ziel der vorliegenden Dissertation war, die spezifischen Effekte von mütterlicher Misshandlungserfahrung, Depression und Borderline-Persönlichkeitsstörung auf kindliche psychische Gesundheit zu identifizieren und mediierende Pfade zu testen. Das erste spezifische Ziel war zu ermitteln, ob mütterliche Misshandlungserfahrung und Depression nicht nur einen Effekt auf kindliche Psychopathologie haben, was bereits gezeigt werden konnte, sondern auch auf kindliche Lebensqualität. Das zweite Ziel war, spezifische Übertragungspfade zu identifizieren, die diese intergenerationalen Effekte von mütterlicher Misshandlungserfahrung, Depression und Borderline-Persönlichkeitsstörung auf kindliche psychische Gesundheit hinsichtlich der Lebensqualität und Psychopathologie erklären können. Es wurden alle drei mütterlichen Risikofaktoren als gleichwertige Prädiktoren in einer Studie untersucht und gleichzeitig verschiedene Mediatoren berücksichtigt. Der Fokus dieser Dissertation lag dabei auf mütterlichen emotionalen und behavioralen Charakteristika wie Erziehungsverhalten, emotionalen Kompetenzen und Misshandlungspotenzial als potenziellen Mediatoren. Zusammengefasst konnten wir zeigen, dass mütterliche Depression nicht nur einen Effekt auf die Psychopathologie der Kinder hat, sondern auch auf deren Lebensqualität. Dieser Effekte wurde meditiert durch Feinfühligkeit und Erziehungsstress der Mutter. Sowohl schwerere Misshandlungserfahrung, als auch Depression und Borderline-Persönlichkeitsstörung erhöhen das mütterliche Misshandlungspotenzial. Wir konnten weiterhin zeigen, dass erhöhtes mütterliches Misshandlungspotenzial einen Effekt auf kindliche Psychopathologie hat. Schwierigkeiten in der Emotionsregulation wurden dabei als Mediator für den Effekt von Depression und Borderline-Persönlichkeitsstörung auf Misshandlungspotenzial identifiziert und empathischer Distress als Mediator für den Effekt von Depression und Borderline-Persönlichkeitsstörung auf kindliche Psychopathologie.
The overall aim of this dissertation was to disentangle the specific contributions of maternal early life maltreatment (ELM), major depressive disorder (MDD), and Borderline Personality Disorder (BPD) to child mental health and identify specific mediating pathways of intergenerational transmission. The first specific aim was to test the hypothesis that ELM and MDD not only bear a risk for child psychopathology – which has previously been shown – but they also influence child quality of life (QoL). The second aim was to identify specific mediating pathways that might explain these intergenerational effects of ELM, MDD, and BPD on child mental health regarding child QoL and psychopathology. The set of studies in this dissertation have incorporated two or all three of these maternal risk factors as predictors in one study and considered several potential mediators. This dissertation thereby focuses on maternal emotional and behavioral characteristics such as parenting behavior, emotional competences and abuse potential in mothers with ELM, MDD, and BPD as mediators for the effects on child mental health. In summary, our findings show that maternal MDD not only poses a risk for child psychopathology but also for child QoL. Sensitivity and parenting stress mediated this effect. We found elevated abuse potential in mothers with MDD, BPD, and higher ELM and a link between abuse potential and child psychopathology. Difficulties in emotion regulation mediated the effects of MDD and BPD on abuse potential. We also identified personal distress as a mediator for the effect of maternal MDD and BPD on child psychopathology.

Ce travail a pour premier objectif la détermination expérimentale de la conduction thermique (k) du diseleniure de niobium NbSe2 – 2H qui présente une transition d'onde de densité de charge a Td=33 k et une transition supraconductrice a tc=7K. Les mesures ont été réalisées entre 100 mk et 300 k. Parallèlement la résistivité électrique et le pouvoir thermoélectrique (S) ont aussi été mesures entre tc et 300 k. Une analyse phénoménologique pour K et S au-dessus de Td, basée sur un mécanisme de diffusion résonante est présentée. L'évolution des propriétés de transport dans la famille MX2-2H est réexaminée à partir d'une image de « pseudo-spin vibronique » et suggère un mécanisme d'abaissement de Td fonde sur un écrantage renforce des pseudo-spins. L'anisotropie du transport électrique, thermique et thermoélectrique du compose « kondo dense » CePt2SI2 a également été déterminée expérimentalement. Les données sont assez bien reproduites à partir d'un calcul prenant en compte l'anisotropie du champ cristallin. Enfin le pouvoir thermoélectrique basal du supraconducteur à haute température critique YBa2Cu306. 8 a été mesuré et analysé. Les mesures de K et de S ont été réalisées grâce a une méthode dynamique et comparative que nous avons mise au point. Celle-ci est particulièrement bien adaptée aux échantillons petits et fragiles et permet de contrôler l'effet perturbateur du rayonnement thermique sur la qualité des mesures

Stress ist Teil unseres Lebens und unsere Stressreaktion oft adaptiv. Unter extremen Bedingungen oder chronischem Stress kann diese Stressantwort jedoch maladaptiv werden und das Gehirn, Verhalten und Kognition negativ beeinflussen. Die Erfahrung von militärischen Kampfeinsatz ist eine spezifische Form von anhaltendem Stress, die aufgrund einer zunehmenden Anzahl und zunehmender Intensität militärischer Konflikte auf der ganzen Welt an Bedeutung gewinnt. In der vorliegenden Dissertation untersuche ich stressbedingte Verluste und erholungsbedingte Gewinne der grauen Hirnsubstanz, hauptsächlich in militärischen Populationen. Diese Dissertation trägt auf vier Wegen zum Wissen über die Beziehung zwischen Stress und Gehirn bei: Sie untersucht (a) den Zusammenhang zwischen Stressbelastung und Gehirn in subklinischen Populationen, (b) mögliche funktionelle Mechanismen für die Entwicklung und Aufrechterhaltung von Posttraumatischer Belastungsstörung (PTBS) bedingt durch militärischen Einsatz, (c) Veränderungen im Volumen der grauen Substanz nach therapeutischen Interventionen für einsatzbedingte PTBS, und (d) die neuronalen Korrelate der Symptomübertreibung in PTBS. Die Dissertation ist publikationsorientiert und besteht aus sechs Artikeln. Zum Zeitpunkt der Einreichung sind Artikel I, Artikel II, Artikel III und Artikel IV veröffentlicht. Artikel V und Artikel VI wurden eingereicht und werden derzeit überprüft.
Stress is an unavoidable part of life and the stress response is often highly adaptive. However, under conditions of extreme or chronic stress, the stress response can become maladaptive and can negatively impact the brain, behavior, and cognition. Combat exposure is a specific instantiation of prolonged stress, and one that is growing in relevance due to an increasing number and escalating intensity of military conflicts across the globe. In this dissertation, I investigate stress-related losses and recovery-related gains in gray matter volume, mainly in combat-exposed military populations. The present dissertation contributes to knowledge about the relationship between stress and the brain in four ways: (a) it investigates the relationship between stress exposure and the brain in subclinical populations, (b) it investigates potential functional mechanisms for the development and maintenance of combat-related posttraumatic stress disorder (PTSD), (c) it investigates alterations in grey matter volume following therapeutic interventions for combat-related PTSD, and (d) it investigates the neural correlates of symptom exaggeration in PTSD. The dissertation is publication-orientated and consists of six papers. At the time of submission, Paper I, Paper II, Paper III and Paper IV have been published. Paper V and Paper VI have been submitted and are currently under review.

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.

Ni-Cu-P-W coating was deposited by electroless method on mild steel substrate to study the crystallization and tribological behavior at different annealing temperatures. Energy dispersive x-ray (EDX) analysis, scanning electron microscopy (SEM), x-ray diffraction (XRD), and differential scanning calorimeter (DSC) were used to study the composition, surface morphology, phase behavior, and thermal behavior of the coating, respectively. Tribological study was conducted using Pin-on-Disc tribotester. EDX analysis confirms the presence of Ni, Cu, P, and W in the deposit. SEM image shows the surface is dense, smooth, and without any observable nodule. Some of the samples were heat treated to 300°C, 500°C, and 700°C for 1 hour to observe the crystallographic change by XRD. One sharp crystalline peak of Ni (111) is present in all condition, but the intensity increases rapidly with the heat treatment temperature. The phase transition temperature of this quaternary coating analyzed by DSC was 431.8°C.

In this chapter, results of our recent investigations on the structural, microstructural and magnetic properties of Cu-based Heusler alloys and MFe2O4 (M = Mn, Fe, Co, Ni, Cu, Zn) nanostructures will be discussed. The chapter is divided into two parts, the first part describes growth and different characterizations of Heusler alloys while in the second part magnetic properties of nano-ferrites are discussed. The Cu50Mn25Al25-xGax (x = 0, 2, 4, 8 and 10 at %) alloys have been synthesized in the form of ribbons. The alloys with x ≤ 8 show the formation of Heusler single phase of the Cu2MnAl structure. Further increase of Ga content gives rise to the formation of γ-Cu9Al4 type phase together with Cu2MnAl Heusler phase. The alloys are ferromagnetically ordered and the saturation magnetization (Ms) decreases slightly with increasing Ga concentration. Annealing of the ribbons significantly changes the magnetic properties of Cu50Mn25Al25-xGax alloys. The splitting in the zero field cooled (ZFC) and field cooled (FC) magnetization curves at low temperature has been observed for alloys. Another important class of material is Nanoferrites. The structural and magnetization behaviour of spinel MFe2O4 nanoferrites are quite different from that of bulk ferrites. X-ray diffraction study revealed spinel structure of MFe2O4 nanoparticles. The observed ferromagnetic behaviour of MFe2O4 depends on the nanostructural shape as well as ferrite inversion degree. The magnetic interactions in Ce doped CoFe2O4 are antiferromagnetic that was confirmed by zero field/field cooling measurements at 100 Oe. Log R (Ω) response measurement of MgFe2O4 thin film was taken for 10–90% relative humidity (% RH) change at 300 K.

The Diesel engine, introduced by Rudolph Diesel in 1892, achieves a higher combustion ratio and fuel efficiency, has lower CO2 emissions per mile than the gasoline engine and is considered to be one of the most viable environmentally friendly technologies for vehicles. “Clean Diesel” using lower sulfur content fuel has become available since 2006. Currently, the Diesel engine and cylinder head are mostly cast iron to withstand the high compression pressures and temperatures of Diesel operation. Further weight reduction (40%–55%) via aluminum substitution in the Diesel engine would result in substantial fuel economy and increased environmental benefits. Current aluminum alloys cannot meet the requirements of the Diesel engine and a new research topic has emerged in aluminum materials technology to address these requirements. The main issue with aluminum alloys is the low resistance to thermal fatigue that results from the constrained expansion and contraction of the material in the interval regions leading to compressive creep deformation at 300°C during engine heat-up and to tensile deformation around 150°C during engine cooldown. This article discusses the performance requirements and the design principles for aluminum alloys for Diesel engine applications. Efforts on the modification of A356 and A319 alloys via Cu, Mg, Ni, Cr, V, Zr, Ti, and Mn addition are reviewed. Recent studies on Mn/Mo addition are presented and the related principles are introduced in designing high volume fraction, thermally stable, and uniform nanoscale dispersoids using solutes with opposite partitioning coefficients in aluminum.

Analysis of the influence of chemical composition, crystallization process and heat treatment on the phase constituents’ morphology, and mechanical properties and crack resistance of 6xxx Al alloys were conducted. The alloys with low Mg and Si content (6063) in the as-cast state are characterized by presence of Si particles and primary intermetallic phases: α-Al8Fe2Si, β-Al5FeSi, β-Mg2Si, and α-Al(FeMn)Si. Higher Mg, Si, and Mn content (6005 and 6082) leads to separation of additional phase particles: Al6Fe, Al6Mn, and Al12(FeMn)Mg3Si6, whereas high Cu content (6061—0.35% and 6066—0.95%, respectively) is responsible for precipitation of additional phase particles: Q-Al5Cu2Mg8Si6 and θ-Al2Cu. It has been established that homogenization results in total dissolution of the θ-Al2Cu and Q-Al5Cu2Mg8Si6 primary phases and partial dissolution of β-Mg2Si. Needle-like and Chinese-script α-Al8Fe2Si and β-Al5FeSi were transformed into spheroidal α-Al(FeMn)Si particles. The maximal consolidation of the 6xxx alloys is a result of precipitation of metastable particles, the transient βʺ, βʹ, and Qʹ/θʹ phases (6061 alloy) with high dispersion. The highest mechanical properties were achieved after holding in the temperature of 565°C/6 h, supersaturated in water, and aging at 175°C/10–20 h (T6). The decohesion process in the presence of tensile stresses in the room temperature proceeds through nucleation, the growth and joining of the voids, as well as the cracking of the primary and secondary large-sized intermetallic phase particles. The increase of deformation temperature up to 300°C causes the changes of the nucleation source and joining of voids—it occurs mainly along the matrix–particle interface.

The temperature dependences of the electron heat capacity and electron-phonon coupling factor for noble (Cu) and transition (Pt) metals are investigated based on the electron density of states (DOS) obtained from ab initio electronic structure calculations. For Cu, d band electrons could be thermally excited when the electron temperature exceeds ∼3000 K, leading to a significant increase, up to an order of magnitude, in the electron-phonon coupling factor and strong enhancement of the electron heat capacity away from the linear dependence on the electron temperature, which is commonly used in most of the current computational and theoretical investigations of ultrafast laser interactions with metals. Opposite to the case in Cu, the thermal excitation of d band electrons in Pt leads to a monotonic decrease of the electron-phonon coupling factor and contributes to significant negative deviations of the electron heat capacity from the linear dependence in the range of electron temperatures that are typically realized in ultrafast laser material processing applications. Strong and drastically different temperature dependences of the thermophysical properties predicted for Cu and Pt point to the importance of the electron DOS effects and the necessity of full consideration of thermal excitation of d band electrons for realistic modeling of short pulse laser interaction with noble and transition metals.

Boiling heat transfer enhancement via compound effect of Electro-Hydro-Dynamic (EHD) and contact angle has been experimentally and analytically investigated. A fluorinated dielectric liquid (Asahi Glass Co. Ltd, AE-3000) was selected as the working fluid. Pool boiling heat transfer in the saturated liquid was measured at atmospheric pressure. In order to change the contact angle between the boiling surface and the dielectric liquid, the different materials Cu, Cr, NiB, Sn, and mixture of 5 and 1.5 micro meter diamond particles were electrically deposited on a boiling surface. The critical heat flux (CHF) for different contact angles showed 20.5 ∼ 26.9 W/cm2 which was −7 ∼ 25 % of that for a non-coated Cu surface (21.5 W/cm2). Upon application of a −5 kV/mm electric field to the micro structured surface (the mixture of 5 and 1.5 micro meter particles), a CHF of 99 W/cm2 at a superheat of 33.5 K was obtained. The previous theoretical equation of pool boiling predicted the CHF with the electric field and without the electrode.

Abstract A build-up process is used to manufacture printed wiring boards (PWBs) for high-density circuits. Presently, CO2 laser beams are used to drill blind via holes (BVHs) that connect copper foils. The Cu-direct drilling process has received considerable attention but is problematic because it produces a copper overhang due to the complex processing phenomena. This report focuses on monitoring scattered matter by Cu-direct laser drilling with a high-speed camera and clarifying the factors related to processing quality while verifying the results by CFD (Computational Fluid Dinamics) analysis. Previous research has shown that processing progress can be made from temperature information using the two-color image method that can measure temperature without contact. However, the two-color image method generates noise in the temperature range (500–3000 °C) which is treated in this research. Filtering was possible by using the RGB data of each pixel on the image. By focusing on laser fluence, it became possible to estimate the laser irradiation time that can guarantee the quality in the drilled hole (BVH) in single pulse continuous irradiation.

Next generation high speed network/communication packages require much larger die sizes and increased ball counts (>3000) to meet high speed, high input/output (I/O) functionality and improved reliability performance. Demand for such high speed large flip chip packages create an opportunity for highly integrated multi-chip modules (MCM’s) and 2.5D/3D silicon (Si) interposer packages which are gradually emerging to meet these requirements. Achieving both increased margins in the power delivery network and increased functionality in next generation high speed network/communication applications requires extremely efficient, low loss package designs with body sizes 50×50mm or larger. One of the biggest challenges for such large die, large body packages is how effectively the assembly risk can be mitigated while fulfilling long term package reliability and functionality. The work presented in this paper describes key factors for mitigating several assembly related issues in the industry, including package warpage/co planarity, and the identification of the optimum processes and materials for successfully manufacturing large body flip chip packages with high assembly yields. As the body sizes and die sizes increase, the chip-to-package interaction failure risk increases significantly due to a larger distance to neutral point (DNP). Typical assembly risks are extreme low-k (ELK) delamination (white bumps) during the chip joining process, bump tearing or cracking, underfill delamination, and warpage issues. A comprehensive experiment was carried out to achieve the objective of the work. A test vehicle was developed using a 21×22mm2, flip chip copper (Cu) column bumped die placed onto a 50×50mm body size, using a multi-layer substrate with full array BGA footprint and ample passive components in the package. Processes were developed to optimize assembly yield and package reliability, including an extensive board level reliability test. Assembly materials were selected to achieve excellent assembly yield, high thermo-mechanical reliability, and increased package functionality.

Thermal properties of thin films may differ from the bulk value due to the differences in microstructure, such as the grain size, impurities and defects. Heat capacity is one of the thermophysical properties and it is measured by calorimetry. However, traditional calorimeters can’t measure heat capacity of thin films which are quasi-2D and has small heat capacity. Recently, micro calorimeters with suspending membrane structure have been developed to measure the heat capacity of ultra thin films with thickness of sub-micrometer to nanometer scale. Efforts are focused on reducing heat capacitance of the addenda and minimizing the thermal link so as to permit an adiabatic measurement of the heat capacity of thin film. In this paper, a micro pulse calorimeter was developed and heat capacities of the copper thin films were measured by the micro pulse calorimetry. The heating rate of the micro calorimeter is up to 200K/ms with heating power of 4.5mW, and the heat capacity of the calorimeter is about 23.4nJ/K at 300K. Heat capacities of polycrystalline copper thin films with thickness from 20nm to 340nm were measured in the temperature range from 300K to 420K in vacuum of 1mPa. In order to extract the specific heat of the Cu films, mass of the films was calculated with volume and density of the sample film. The specific heat of the Cu films was compared with the literature values of bulk Cu. The specific heat of the 340nm Cu film is close to the literature data of bulk Cu. For the thinner films, enhanced specific heat was observed, and the data shows that the specific heat increases with the decreasing of crystalline size and film thickness.

This paper reports a simple and cheap fabrication for a micro direct methanol fuel cell, featured by MEMS technology. KOH solution was used to fabricate the microchannel. Then laser technology was used to drill fuel feeding hole and connections between formed microchannels. Finally, Ti/Cu/Pt layers of 100Å/3000Å/800Å in thickness were coated onto the surface of etched microchannel by e-gun evaporator as the catalyst layer to increase the area of electrode. Two different widths of microchannels, which are 200μm and 400μm, were fabricated. The advantage of the designed package was self-aligned with the chips by using glass chips. The aligned holes on both fabricated chip and glass chip were drilled by laser, which could be self-aligned and locked by screw. Therefore it’s easy to assemble the chip, MEA, and glass chip by this simple package way. The designed package could be used to prevent the fuel leakage and chip damage problems under operation. The performance of this μDMFC was measured up to 40mW/cm2 at 60°C with 2M methanol solution.

Metallic residues are distributed heterogeneously onto small-arms range soils from projectile fragmentation upon impact with a target or berm backstop. Incremental Sampling Methodology (ISM) can address the spatially heterogeneous contamination of surface soils on small-arms ranges, but representative kilogram-sized ISM subsamples are affected by the range of metallic residue particle sizes in the sample. This study compares the precision and concentrations of metals in a small-arms range soil sample processed by a puck mill, ring and puck mill, ball mill, and mortar and pestle prior to analysis. The ball mill, puck mill, and puck and ring mill produced acceptable relative standard deviations of less than 15% for the anthropogenic metals of interest (Lead (Pb), Antimony (Sb), Copper (Cu), and Zinc (Zn)), with the ball mill exhibiting the greatest precision for Pb, Cu, and Zn. Precision by mortar and pestle, without milling, was considerably higher (40% to >100%) for anthropogenic metals. Media anthropogenic metal concentrations varied by more than 40% between milling methods, with the greatest concentrations produced by the puck mill, followed by the puck and ring mill and then the ball mill. Metal concentrations were also dependent on milling time, with concentrations stabilizing for the puck mill by 300 s but still increasing for the ball mill over 20 h. Differences in metal concentrations were not directly related to the surface area of the milled sample. Overall, the tested milling methods were successful in producing reproducible data for soils containing metallic residues. However, the effects of milling type and time on concentrations require consideration in environmental investigations.