(1) Therefore, we recommend that periodic surveys for flying squirrels continue at approximately 10 year intervals.

(2) At periodic intervals, the iron bars at the mouth of narrow roads, put up to prevent the entry of heavy vehicles, are knocked down by lorries, due to reckless driving.

(3) By contrast, the letting of the basement on a weekly tenancy is an example of a periodic tenancy.

(4) At this stage, the client needs periodic support as well as training in relapse prevention.

(5) The training should be provided to all ranks from the highest to the lowest and should be given at periodic intervals, not just at the start of the job.

(6) New Zealand is to present its next periodic report on compliance with the UN convention in September this year.

(7) Maintaining the transformation merits and requires a periodic update on where social history stands.

(8) The first rough draft of the periodic elements signaled not the end but the beginning of chemistry.

(9) Roofs are like heating and cooling systems: The equipment needs periodic cleaning and tuning for peak efficiency.

(10) Having experienced spells of acute water scarcity at periodic intervals, people do lament over the waste of the precious resource in such times.

(11) So every one of our portfolios has always been planned and recommended for periodic rebalancing.

(12) Leases for a fixed term and periodic tenancies are the types of lease most frequently encountered.

(13) However, in the late 18th century there was a return to the periodic Latinate style.

(14) The periodic table has since been expanded to 81 stable and 31 radioactive elements.

(15) The steadily increasing weights gave Mendeleyev, Meyer, and others a kind of index by which to order the elements and reveal their periodic behaviour.

(16) They crop up in one form or the other at periodic intervals.

(17) The study of oscillating reactions is the study of periodic changes in chemical reactions.

(18) Bismuth is the fifth and last element in Group 15 of the periodic table.

(19) Emotion is kept in check - rage and pain appear suddenly, like periodic explosions.

(20) Some economists argue that periodic credit crunches are the price emerging markets must pay for faster growth.