PubMed Journals Articles About "Eppendorf Research Plus Pipette" RSS

23:14 EST 19th February 2018 | BioPortfolio

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Showing "Eppendorf Research Plus Pipette" PubMed Articles 1–25 of 23,000+

A new scanning mode to improve scanning ion conductance microscopy imaging rate with pipette predicted movement.

Scanning ion conductance microscopy (SICM) is a non-contact surface topography measurement technique that has been increasingly used for soft surfaces such as living biological samples. An approach-retract scanning (ARS) mode is widely used to avoid collision between the SICM probe (i.e., pipette) and an abrupt increase in sample profile. However, the redundant pipette trajectory in the ARS mode lengthens the scan time, thus reducing SICM efficiency and time resolution. To avoid this problem, a new scanning...

The simplest "field" methods for extractin of nematodes from plants, wood, insects and soil, with additional description how to keep extracted nematodes alive for a long time.

The simplest modification of the dynamic extraction method using cottonwool filter based on the Baermann funnel principle, is described. This modification excludes the funnel because a great share of Sticky worms attach to sloping walls of a funnel and thus do not reach the collector Eppendorf tube. But the main principle of the Baermann funnel is used, I. e. sinking down of actively moving heavy narrow bodies via wide holes of filter and thus separating the active worms from passive non-Brownian moving sub...

Collision and Coalescence of Single Attoliter Oil Droplets on a Pipette Nanopore.

In this work, we describe the use of a quartz pipette nanopore to study the collision and coalescence of individual emulsion oil droplets and their subsequent nanopore translocation. Collision and coalescence of single toluene droplets at a nanopore orifice is driven primarily by electroosmosis and electrophoresis and leads to the fast growth of a trapped oil droplet. This results in a stepwise current response due to the coalesced oil droplet increasing its volume and its ability to partially block the nan...

Three-Dimensional Super-Resolution Imaging of Single Nanoparticles Delivered by Pipettes.

Controlled three-dimensional positioning of nanoparticles is achieved by delivering single fluorescent nanoparticles from a nanopipette and capturing them at well-defined regions of an electrified substrate. To control the position of single nanoparticles, the force of the pressure-driven flow from the pipette is balanced by the attractive electrostatic force at the substrate, providing a strategy by which nanoparticle trajectories can be manipulated in real time. To visualize nanoparticle motion, a resisti...

A hybrid material as a sorbent phase for the disposable pipette extraction technique enhances efficiency in the determination of phenolic endocrine-disrupting compounds.

In this study, the hybrid material 3-n-propyl(3-methylpyridinium) silsesquioxane chloride (Si3Py(+)Cl(-)) was synthesized and investigated as a novel sorbent phase for the disposable pipette extraction (DPX) technique coupled to high-performance liquid chromatography-florescence detection. This sorbent phase was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Aqueous samples containing the phenolic endocrine-disrupting compounds bisphenol A (BPA), 17α...

Closed-Loop Real-Time Imaging Enables Fully Automated Cell-Targeted Patch-Clamp Neural Recording In Vivo.

Targeted patch-clamp recording is a powerful method for characterizing visually identified cells in intact neural circuits, but it requires skill to perform. We previously developed an algorithm that automates "blind" patching in vivo, but full automation of visually guided, targeted in vivo patching has not been demonstrated, with currently available approaches requiring human intervention to compensate for cell movement as a patch pipette approaches a targeted neuron. Here we present a closed-loop real...

Adding to the Truth of the Matter: The Case for Qualitative Research.

The purpose of this column is to discuss the impact that qualitative research has on translational research, whose aim is to improve the health and well-being of individuals. To that end, rigorous qualitative research is examined; translational research is entertained and the manner in which qualitative research can be a co-equal partner with quantitative research is proposed.

Collaborative Orthopaedic Research Between and Within Institutions.

Collaborative research is common in many medical disciplines; however, the field of orthopaedics has been relatively slow to adopt this type of research approach. Collaborative research efforts can occur between multiple institutions and, in some instances, may benefit from subspecialty society sponsorship. Collaborative research efforts between several research spheres within a single institution also can be advantageous. Collaborative research has many benefits, including a larger number of patients in st...

Modulation of human Kv4.3/KChIP2 channel inactivation kinetics by cytoplasmic Ca(2).

The transient outward current (I to) in the human heart is mediated by Kv4.3 channels complexed with Kv channel interacting protein (KChIP) 2, a cytoplasmic Ca(2+)-binding EF-hand protein known to modulate Kv4.3 inactivation gating upon heterologous co-expression. We studied Kv4.3 channels co-expressed with wild-type (wt) or EF-hand-mutated (ΔEF) KChIP2 in human embryonic kidney (HEK) 293 cells. Co-expression took place in the absence or presence of BAPTA-AM, and macroscopic currents were recorded in the w...

Improving the process of research ethics review.

Research Ethics Boards, or Institutional Review Boards, protect the safety and welfare of human research participants. These bodies are responsible for providing an independent evaluation of proposed research studies, ultimately ensuring that the research does not proceed unless standards and regulations are met.

Research protocol for the Picture Talk Project: a qualitative study on research and consent with remote Australian Aboriginal communities.

Research with Indigenous populations is not always designed with cultural sensitivity. Few publications evaluate or describe in detail seeking consent for research with Indigenous participants. When potential participants are not engaged in a culturally respectful manner, participation rates and research quality can be adversely affected. It is unethical to proceed with research without truly informed consent.

Can research that is not intended or unlikely to be published be considered ethical?

For research to be ethically acceptable, the potential benefits must justify any risks involved for participants. Dissemination of research findings through publication is one way of creating benefit, but not all researchers intend to publish their research. Other factors, such as lack of size or representativeness, generalisability or innovativeness, or negative findings mean the research is unlikely to be published in a peer-reviewed medical journal.

Clinical Research Nursing: Development of a Residency Program

Clinical research nurses are essential in the coordination of clinical trials and the management of research participants. Without a stable, knowledgeable research nurse workforce, the conduct of research is affected. A research nurse residency is a novel approach to preparing new graduate nurses for the oncology research nurse role. This article will describe the development and content of the research nurse residency and how this approach is being used to address a need for clinical research nurses to sup...

Researchers experience of misconduct in research in Malaysian higher education institutions.

This paper offers a qualitative analysis of research misconduct witnessed by researchers during their careers, either by research students or fellow researchers when conducting or supervising research in their respective departments. Interviews were conducted with 21 participants from various research backgrounds and with a range of research experience, from selected universities in Malaysia. Our study found that misbehavior such as, manipulating research data, misrepresentation of research outcomes, plagia...

Shall Research Ethics Boards be Reviewing Research Methodology!

Foreign Language Short Course: Special Operations Clinical Research Fundamentals.

When we do not know a language, we are at the mercy of an interpreter. The same is true for research: Special Operations Forces (SOF) clinicians not actively involved in research initiatives may rely on scientific interpreters, so it is important to speak some of the language personally. For any clinician, using evidence in practice requires a working knowledge of how that evidence was generated from research, which requires an understanding of research science language. Here we review common basics of rese...

Prioritizing the patient voice in the development of urologic oncology research.

Prioritization of patient and stakeholder engagement in the research process has been realized through increased funding and policy directives at the government level. Particularly, patient engagement in the preparatory research stage has driven development of patient-prioritized research questions. In this article, a successful example of patient-centered research prioritization is reviewed, and effective strategies and opportunities for patient engagement in urologic oncology research are described.

NHS doctors should be more involved in research, says research institute.

Gaps in Current Knowledge and Priorities for Future Research in Dry Eye.

Dry eye, a common yet underrecognized and evolving field, has few recommended treatment algorithms, mostly based on expert consensus rather than robust research evidence. There are high costs associated with managing dry eye and conducting research to identify effective and safe long-term treatments. To support evidence-based management of dry eye, our purpose was to identify and prioritize important clinical research questions for future clinical research.

Quality evaluation of sperm from livebearing fishes: Standardized assessment of sperm bundles (spermatozeugmata) from Xenotoca eiseni (Goodeidae).

Standardized evaluation of sperm quality is essential for research, commercial-scale cryopreservation, and induced spawning. However, standardized methods for evaluation of sperm bundles (spermatozeugmata or spermatophores) have not been established. The purpose of the present study was to use Redtail Splitfin (Xenotoca eiseni) as a model for freshwater livebearing fishes to establish initial standardized methods to collect sperm bundles, and quantitatively and qualitatively evaluate quality-related attribu...

Show me the money! An analysis of underserved stakeholders' funding priorities in Patient Centered Outcomes Research domains.

Develop an accessible exercise to engage underserved populations about research funding priorities; analyze the criteria they use to prioritize research; contrast these criteria to those currently used by Patient Centered Outcomes Research Institute (PCORI).

Research for us! Which Topics are Relevant for Patients with Depression?

Objective To identify and prioritize research questions about treatment and care of depression which are relevant to patients, carers and clinicians. The importance of involvement of those stakeholder groups in health services research is increasingly recognized internationally. Methods Research topics were collected in an online survey using unipark software. Patients, carers and clinicians wrote down research topics, i. e. uncertainties they experienced when dealing with depression. The stated research ...

Using democracy to award research funding: an observational study.

Winning funding for health and medical research usually involves a lengthy application process. With success rates under 20%, much of the time spent by 80% of applicants could have been better used on actual research. An alternative funding system that could save time is using democracy to award the most deserving researchers based on votes from the research community. We aimed to pilot how such a system could work and examine some potential biases.

The Evolving Professional Identity of the Clinical Research Nurse - A Qualitative Exploration.

Clinical research nurses (CRN) make a significant contribution to healthcare research within the UK and internationally. However, lack of clarity about their role, and scope of practice renders their contribution within the profession and in the minds of the wider public invisible. This has implications in terms of promoting the role nurses play not only in terms of recruitment, retention, and care of research participants but also as research leaders of the future.

When Does Therapeutic Misconception Affect Surrogates' or Subjects' Decision Making about Whether to Participate in Dementia Research?

"Therapeutic misconception" (TM) refers to inappropriate assumptions and beliefs on the part of research participants regarding key distinctions between the purpose, methods, intended benefits, and potential disadvantages of research compared to those of clinical care. Despite an extensive literature describing TM across varied types of research and populations, minimal work has addressed TM in the context of dementia research. This is a serious gap, for several reasons: people with dementia are at signific...

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