Nanotesla torque magnetometry using a microcantilever

We present a novel ultrasensitive magnetometry technique using a micromachined magnetic antilever that is brought in resonance. The induced magnetic moment generates a torque on the cantilever, thereby effectively stiffening the cantilever spring constant and changing its resonance frequency. Experiments are in good correspondence with the presented analytical model for this frequency shift, predicting the detection of nanotesla magnetic fields.\u

Produktie van kopersulfaatpentahydraat uit sulfaatstroom door middel van kristallisatie

DelftChemTechApplied Science

What have they done with the MOOCs?! The impact of MOOCs on Campus Education

In 2013 Delft University of Technology (TU Delft) started to offer Massive Open Online Courses (MOOCs) on the EdX platform. One of the main principles in the MOOC development process was to publish all educational resources under an open license (Creative Commons License) (Ouwehand, 2015). This aligned with TU Delft’s Open Access Policy. Another important starting point in the MOOC development process was the aim to improve campus education by integrating MOOC content in those courses. The impact of MOOCs concerns not only the world outside the university, but more importantly also within the university. Especially for a traditional brick-and-mortar research-based university, like TU Delft, this is a big gain: education has become more important. In the past three years it has become clear that developing a MOOC has led lecturers to re-think their approach towards teaching and to integrate MOOC materials in campus education, which has impact on the way they teach on campus. MOOCs are used on campus in different ways, from a small addition to an existing course to a full integration into a completely redesigned campus course. Moreover, some teachers became conscious of the importance of educational resources under CC License and started to use material from other universities. One of the faculties created a course which uses MOOC materials to help the students to prepare for a master program. This paper describes the way in which MOOCs have been used in campus education and the impact this has had on teaching and learning

Pregnancy in classic galactosemia despite undetectable anti-Mullerian hormone

OBJECTIVE: To report a pregnancy in a patient with classic galactosemia despite signs of no ovarian reserve to draw attention to the limited predictive value of ovarian reserve tests in these patients. DESIGN: Case report. SETTING: Secondary and tertiary care center. PATIENT(S): A patient with classic galactosemia with premature ovarian failure and two previous pregnancies. INTERVENTION(S): Exogenous FSH ovarian reserve test and anti-Mullerian hormone (AMH) measurement. MAIN OUTCOME MEASURE(S): 17beta-Estradiol response, AMH level. RESULT(S): Pregnancy despite undetectable AMH (<0.1 microg/L) and no E(2) response (exogenous FSH ovarian reserve test). CONCLUSION(S): Fluctuating premature ovarian failure makes fertility counseling of patients with classic galactosemia difficult. Commonly used ovarian function and reserve tests seem to have no significance

Platypnoea-orthodeoxia syndrome, an underdiagnosed cause of hypoxaemia: four cases and the possible underlying mechanisms

Cardiolog